Yaya Touré is considering leaving Manchester City after the club failed to wish him a happy birthday, according to his agent.
Dimitry Seluk says the midfielder feels the club "disrespected" him by not acknowledging his 31st birthday at a club event in Abu Dhabi last week. City were in the Gulf state to play an end of season friendly following their Premier League title win.
"Yaya is so upset he's thinking of leaving City," Seluk said in the Sun. "There are a number of things that have happened that have left Yaya feeling bitterly upset. He must concentrate on the World Cup now. But City have treated him with disrespect and have really hurt him."
Touré scored 24 goals for City last season
"They don't know that money can't buy relationships – no Sheikh can buy a relationship. This isn't about money or a new contract – it's about human relationships and City have shown they don't respect him. I repeat, this is not about money. In fact, he would take less to return to Barcelona."
WATCH: CITY CELEBRATE TOURÉ'S BIRTHDAY (2:40)
City could be forgiven for dismissing Seluk's threat as frivolous. Seluk claimed last year - and the year before - Touré could leave, yet the Ivory Coast international signed a new contract 11 months ago.
In March last year, Seluk explained Touré felt "mistreated" during contract negotiations, yet a matter of weeks later Touré inked a new four-year deal at City.
City's title celebrations
Manchester City v West Ham United - Premier League(01 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(02 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(03 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(04 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(05 of46)
Manchester City's Belgian midfielder Vincent Kompany (Front R) Manchester City's Ivorian defender Yaya Toure (C) and Manchester City's Argentinian forward Sergio Agüero (L) celebrate with the Premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(06 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the Premiership trophy after his team won 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(07 of46)
Manchester City's Bosnian forward Edin Dzeko (C) celebrates with the Premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(08 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(09 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(10 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the Premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(11 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the Premiership trophy after winning 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(12 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Shaun Botterill/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(13 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Shaun Botterill/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(14 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(15 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(16 of46)
Manchester City's Chilean manager Manuel Pellegrini is thrown in the air by his players as they celebrate after winning the Premiership title following the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(17 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(18 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(19 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(20 of46)
MANCHESTER, ENGLAND - MAY 11: Vincent Kompany of Manchester City celebrates with Samir Nasri as the final whistle is blown at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(21 of46)
MANCHESTER, ENGLAND - MAY 11: Vincent Kompany of Manchester City celebrates with Samir Nasri as the final whistle is blown at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(22 of46)
MANCHESTER, ENGLAND - MAY 11: Manchester City fans celebrate at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(23 of46)
MANCHESTER, ENGLAND - MAY 11: Fernandinho of Manchester City celebrates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(24 of46)
MANCHESTER, ENGLAND - MAY 11: Noel Gallagher (L) and Johnny Marr celebrate at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(25 of46)
MANCHESTER, ENGLAND - MAY 11: Noel Gallagher celebrates with the Captain's armband at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(26 of46)
MANCHESTER, ENGLAND - MAY 11: Noel Gallagher celebrates with the Captain's armband at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Shaun Botterill/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(27 of46)
Manchester City's Argentinian forward Sergio Aguero (C) and Manchester City's Belgian midfielder Vincent Kompany (L) celebrate with the Premiership trophy following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(28 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the Premiership trophy after his team won 2-0 during the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATES - RESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(29 of46)
MANCHESTER, ENGLAND - MAY 11: Joe Hart of Manchester City celebrates with his team-mates at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(30 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the Premiership trophy following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(31 of46)
Manchester City fans celebrate after their team won the Premiership title following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(32 of46)
Manchester City's Belgian midfielder Vincent Kompany (C) celebrates with the trophy after his team won the Premiership title following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(33 of46)
Manchester City players celebrate with the trophy after their team won the Premiership title following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(34 of46)
Manchester City's Serbian defender Aleksandar Kolarov (white shirt) celebrates with his team after they won the Premiership title race following a 2-0 victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(35 of46)
MANCHESTER, ENGLAND - MAY 11: Manchester City fans celebrate at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Alex Livesey/Getty Images) (credit:Getty Images)
Manchester City v West Ham United - Premier League(36 of46)
MANCHESTER, ENGLAND - MAY 11: The Manchester City players celebrate with the Premier League trophy at the end of the Barclays Premier League match between Manchester City and West Ham United at the Etihad Stadium on May 11, 2014 in Manchester, England. (Photo by Shaun Botterill/Getty Images) (credit:Getty Images)
FBL-ENG-PR-MAN CITY-WEST HAM(37 of46)
Manchester City's Belgian midfielder Vincent Kompany celebrates with the trophy after his team won the Premiership title following their victory in the English Premier League football match between Manchester City and West Ham United at the Etihad Stadium in Manchester on May 11, 2014. AFP PHOTO/ANDREW YATESRESTRICTED TO EDITORIAL USE. No use with unauthorized audio, video, data, fixture lists, club/league logos or live services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. (Photo credit should read ANDREW YATES/AFP/Getty Images) (credit:Getty Images)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(38 of46)
Manchester City manager Manuel Pellegrini celebrates at the final whistle after winning the Premier League Title at the Etihad Stadium, Manchester. (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(39 of46)
Manchester City's Joe Hart celebrates victory with a bottle of champagne (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(40 of46)
Manchester City's manager Manuel Pellegrini celebrates winning the title (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(41 of46)
Manchester City's Samir Nasri celebrates with the premier league trophy (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(42 of46)
Oasis singer Noel Gallagher celebrates Manchester City's victory (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(43 of46)
Manchester City's captain Vincent Kompany lifts the premier league trophy (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(44 of46)
Manchester City's captain Vincent Kompany lifts the premier league trophy (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(45 of46)
Manchester City players celebrate with the Barclays Premier League Trophy following the Barclays Premier League match at the Etihad Stadium, Manchester. (credit:PA)
Soccer - Barclays Premier League - Manchester City v West Ham United - Etihad Stadium(46 of46)
Manchester City's captain Vincent Kompany lifts the premier league trophy (credit:PA)
Seluk bleated: "What happened at his birthday meant the club don't care about him. It was proof. They can say whatever they want, 'Oh we like him but we forgot'.
"Forgot? About Yaya? The player who helped you to be two-times Premier League champions? The guy who helped you win the FA Cup and the League Cup?
"His birthday can be on a normal day and, in a normal team, his team-mates and club would at least give him good wishes.
"But when you win the title on May 11, a day later you go to Abu Dhabi and on May 13 you have a big party to celebrate the title and nobody comes to Yaya to say, 'Happy birthday', what more do you want?"