Manchester United boss Sir Alex Ferguson has questioned Rio Ferdinand's ability to cope with a rash of top level games.

Ferguson was explaining why he had written to the Football Association stating that none of his overage players, with the exception of Ryan Giggs, would be available for selection for the Great Britain Olympic squad. However, England could end up facing a schedule of six matches in 21 days, which is just four days more than the one Stuart Pearce's GB outfit will be plotting for.

"In the Olympics you play a game every four days. Rio Ferdinand couldn't do that," Ferguson told MUTV.