Manchester United boss Sir Alex Ferguson says he could've started Ryan Giggs at Real Madrid last week.

Giggs was on the pitch for almost half an hour as Shinji Kagawa's replacement, having played a full game against Everton three days earlier.

"If Giggsy hadn't put that effort in on Sunday I probably would have played him for his experience but he did great when he came on," said Ferguson. "He's been unbelievable, I don't know how he does it."