Chelsea will face Atlético Madrid in the Champions League semi-final while Real Madrid will meet Bayern Munich in two grudge ties.
José Mourinho's last match as Real Madrid manager was defeat to Atlético in a fraught Copa del Rey final, when he was sent to the stands and Cristiano Ronaldo was sent off at the Santiago Bernabéu.
Madrid and Bayern's enmity dates back to the 1976 European Cup semi-finals. Real's Roberto Martinez broke his nose in a collision with Bayern goalkeeper Sepp Maier, while a fan known as "El Loco del Bernabéu" (The Bernabéu madman) invaded the pitch and attacked the referee and Bayern striker Gerd Muüller.
Bayern eliminated Real from the Champions League semi-finals following a penalty shootout in 2012.
Sergio Ramos skied a memorable penalty against Bayern in 2012
Chelsea striker Fernando Torres will get to return to his former club at the Vicente Calderón, while Pep Guardiola will manage against Madrid for the first time since Barcelona's pivotal Primera Liga defeat to them two years ago.
However, it appears Thibaut Courtois can play against his parent club.
Atlético beat Chelsea 4-1 in the 2012 European Super Cup final in Monaco
Atlético president Enrique Cerezo yesterday said the club will not pay the €3 million that would enable Courtois to play against Chelsea, however Uefa have now intervened and clarified he can play.
A statement read: “Both the UEFA Champions League and the UEFA Disciplinary Regulations contain clear provisions which strictly forbid any club to exert, or attempt to exert, any influence whatsoever over the players that another club may (or may not) field in a match.
Chelsea vs PSG
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(01 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea tuurns to celebrate scoring their first goal as Alex of PSG (R) reacts during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(02 of56)
LONDON, ENGLAND - APRIL 08: David Luiz of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(03 of56)
LONDON, ENGLAND - APRIL 08: David Luiz of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(04 of56)
LONDON, ENGLAND - APRIL 08: David Luiz of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(05 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea tuurns to celebrate scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(06 of56)
LONDON, ENGLAND - APRIL 08: Oscar of Chelsea congratulates Andre Schurrle of Chelsea on scoring the opening goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(07 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea celebrates scoring their first goal with Cesar Azpilicueta and Frank Lampard of Chelsea (R) during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(08 of56)
LONDON, ENGLAND - APRIL 08: Referee Pedro Proença shows Frank Lampard of Chelsea a yellow card during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(09 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea tuurns to celebrate scoring their first goal as Alex of PSG (R) reacts during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(10 of56)
LONDON, ENGLAND - APRIL 08: Chelsea fans wave flags during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(11 of56)
LONDON, ENGLAND - APRIL 08: Samuel Eto'o of Chelsea breaks with the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(12 of56)
LONDON, ENGLAND - APRIL 08: Ezequiel Lavezzi of PSG is closed down by Gary Cahill of Chelsea during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(13 of56)
LONDON, ENGLAND - APRIL 08: Referee Pedro Proenca shows Willian of Chelsea a yellow card during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(14 of56)
LONDON, ENGLAND - APRIL 08: Marco Verratti of PSG reacts during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(15 of56)
LONDON, ENGLAND - APRIL 08: Cesar Azpilicueta of Chelsea and Marco Verratti of PSG batlte for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(16 of56)
LONDON, ENGLAND - APRIL 08: Frank Lampard of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(17 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea scores the opening goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(18 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea celebrates scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(19 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea celebrates scoring their first goal with Cesar Azpilicueta of Chelsea during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(20 of56)
LONDON, ENGLAND - APRIL 08: Cesar Azpilicueta of Chelsea and Marco Verratti of PSG batlte for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(21 of56)
LONDON, ENGLAND - APRIL 08: John Terry of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(22 of56)
LONDON, ENGLAND - APRIL 08: David Luiz of Chelsea congratulates Andre Schurrle of Chelsea on scoring their first goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(23 of56)
LONDON, ENGLAND - APRIL 08: Frank Lampard of Chelsea and Edinson Cavani of PSG battle for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(24 of56)
LONDON, ENGLAND - APRIL 08: Frank Lampard of Chelsea and Edinson Cavani of PSG battle for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(25 of56)
LONDON, ENGLAND - APRIL 08: Edinson Cavani of PSG chases down Gary Cahill of Chelsea during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(26 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea and Thiago Motta of PSG battle for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(27 of56)
LONDON, ENGLAND - APRIL 08: Salvatore Sirigu of PSG as Oscar of Chelsea's freekick hits the woodwork during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(28 of56)
LONDON, ENGLAND - APRIL 08: John Terry of Chelsea and Ezequiel Lavezzi of PSG tussle for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
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Chelsea fans hold up a sign reading 'Lampard is a legend' and flags ahead of the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(30 of56)
LONDON, ENGLAND - APRIL 08: Andre Schurrle of Chelsea and Thiago Motta of PSG battle for the ball during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(31 of56)
LONDON, ENGLAND - APRIL 08: Branislav Ivanovic of Chelsea fouls Blaise Matuidi of PSG during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(32 of56)
LONDON, ENGLAND - APRIL 08: Willian of Chelsea is marshalled by Blaise Matuidi of PSG during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
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Paris Saint-Germain fans cheer in the crowd before the start of the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(34 of56)
LONDON, ENGLAND - APRIL 08: Oscar of Chelsea's freekick hits the woodwork during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
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Paris Saint-Germain fans cheer in the crowd before the start of the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
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Paris Saint-Germain fans cheer in the crowd before the start of the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(37 of56)
LONDON, ENGLAND - APRIL 08: PSG fans sing during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(38 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(39 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(40 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal with team mates during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(41 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(42 of56)
LONDON, ENGLAND - APRIL 08: Gary Cahill, David Luiz, Cesar Azpilicueta, John Terry and Demba Ba of Chelsea celebrate victory as the final whistle is blown during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(43 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal with team mates during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(44 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea scores their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(45 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal with Branislav Ivanovic of Chelsea during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(46 of56)
LONDON, ENGLAND - APRIL 08: A dejected Head Coach Laurent Blanc of PSG reacts after Demba Ba of Chelsea (not pictured) scores Chelsea's secod goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(47 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea scores their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Julian Finney/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(48 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea celebrates scoring their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
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Chelsea's French-born Senegalese striker Demba Ba celebrates scoring Chelsea's second goal during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
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Chelsea's French-born Senegalese striker Demba Ba (C) scores Chelsea's second goal past Paris' Italian goalkeeper Salvatore Sirigu (L) during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
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Chelsea's French-born Senegalese striker Demba Ba (2R) scores Chelsea's second goal past Paris' Italian goalkeeper Salvatore Sirigu (L) during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
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Chelsea's French-born Senegalese striker Demba Ba (R) wheels away to celebrate after scoring Chelsea's second goal past Paris' Italian goalkeeper Salvatore Sirigu (L) during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
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Chelsea's Portuguese manager Jose Mourinho (2R) talks to his players as they celebrate their second goal scored by Chelsea's French-born Senegalese striker Demba Ba during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images) (credit:Getty Images)
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Chelsea's French-born Senegalese striker Demba Ba (R) and Paris' Brazilian defender Thiago Silva (L) contest a ball in the air during the UEFA Champions League quarter final second leg football match between Chelsea and Paris Saint-Germain at Stamford Bridge in London on April 8, 2014. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(55 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea scores their second goal during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
Chelsea v Paris Saint-Germain FC - UEFA Champions League Quarter Final(56 of56)
LONDON, ENGLAND - APRIL 08: Demba Ba of Chelsea scores their second goal past Salvatore Sirigu of PSG during the UEFA Champions League Quarter Final second leg match between Chelsea and Paris Saint-Germain FC at Stamford Bridge on April 8, 2014 in London, England. (Photo by Mike Hewitt/Getty Images) (credit:Getty Images)
“It follows that any provision in a private contract between clubs which might function in such a way as to influence who a club fields in a match is null, void and unenforceable so far as UEFA is concerned.
“Furthermore, any attempt to enforce such a provision would be a clear violation of both the UEFA Champions League and the UEFA Disciplinary Regulations and would therefore be sanctioned accordingly.”
Chelsea chief executive Ron Gourlay told Sky Sports: "It's quite simple, Thibaut can play against Chelsea. That was never in doubt."
Courtois joined Chelsea from Genk in 2011 and is into his third season on loan with Atléti. He played in Atlético's 4-1 thrashing of Chelsea in the 2012 European Super Cup.
The final could throw up a repeat of the 1974 European Cup final between Atlético and Bayern or, more memorably, Chelsea's shock win against the holders two years ago.