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28/11/2013 03:19 GMT | Updated 28/11/2013 03:22 GMT

Ryan Giggs' Form Stunned Bayer Leverkusen Defender, Says Wayne Rooney

LEVERKUSEN, GERMANY - NOVEMBER 27:  Ryan Giggs of Manchester United applauds the fans during the UEFA Champions League Group A match between Bayer Leverkusen and Manchester United at BayArena on November 27, 2013 in Leverkusen, Germany.  (Photo by Lars Baron/Bongarts/Getty Images)
Lars Baron via Getty Images
LEVERKUSEN, GERMANY - NOVEMBER 27: Ryan Giggs of Manchester United applauds the fans during the UEFA Champions League Group A match between Bayer Leverkusen and Manchester United at BayArena on November 27, 2013 in Leverkusen, Germany. (Photo by Lars Baron/Bongarts/Getty Images)

Manchester United forward Wayne Rooney revealed a Bayer Leverkusen player asked him how Ryan Giggs has defied the years to continue playing.

Giggs celebrates his 40th birthday on Friday, and delivered a superb display in Wednesday's 5-0 Champions League romp at the BayArena.

Sami Hyypia's men simply had no answer to the Welshman's class.

Photo galleryRyan Giggs' major trophies See Gallery

"I've run out of things to say about Ryan," Rooney said. "Actually, during the game, the Bayer centre-half was asking how he is still playing at that age.

"I certainly won't be playing at that age, that's for sure. His composure on the ball is great."

United's paucity of options in midfield, and Michael Carrick's injury, could lead to a start for Giggs at Tottenham on Sunday.

If Arsenal win at Cardiff, United will be 10 points adrift of the Premier League leaders at kick-off.