SIR Alex Ferguson is happy to let Fabio Capello decide whether Wayne Rooney is fit enough to report for England duty next week.

Although the Manchester United boss declared on Tuesday that Rooney could be out for three weeks with the ankle injury he aggravated at Bolton last weekend, Ferguson has now revealed his star striker returned to training on Thursday.

As usual, Rooney is pestering his manager to play in United’s Premier League clash with Sunderland at the Stadium of Light.

Ferguson has no intention of agreeing in an attempt to save the 24-year-old from himself and ensure he starts to do himself justice again.

But with England not due in action until their October Euro 2012 qualifier with Montenegro at Wembley, Ferguson is willing to hand Rooney over to Capello and trust the Italian’s judgement.

‘‘It is really up to Fabio,’’ said Ferguson.

‘‘You are talking about an extra ten days. By that time, we would hope he will definitely be 100 per cent.

‘‘Wayne wants to play but now we have identified the injury, we have to be dead sure we are doing the right thing for him because he has not been doing himself the proper justice.’’ Not that Ferguson is condemning Rooney for his desperation to get involved.

Having scored just once this season – from the penalty spot – and been substituted after an hour at Bolton, many players would be happy to take a break from the limelight.

Rooney has never taken that attitude. But Ferguson feels the game has changed from the one where players could go into matches some way below their best.

‘‘The problem with the lad is that he is too willing to play with injuries,’’ said Ferguson.

‘‘It is a great trait to have in any footballer. But with the speed and number of games you have these days, fitness levels are really important.’’ Rooney is not the only fitness issue Ferguson is having to contend with.

Slightly less clear-cut with Sunderland in mind is the availability of Rio Ferdinand, Michael Carrick and Anderson, who all started Wednesday’s win in Valencia after periods on the sidelines.

‘‘We are going to check them,’’ revealed Ferguson.

‘‘Wednesday was Rio’s first real game for six months. I know he played against Rangers and Scunthorpe. But that was a real game on Wednesday.

‘‘Michael Carrick played in the Community Shield but he had been bothered by his Achilles and Anderson had only played one game since injuring his cruciate ligaments at West Ham.’’ Not that Ferguson has too many choices as, like Rooney, veteran duo Ryan Giggs and Paul Scholes are not being considered this weekend after missing the trip to Spain.

The one area where United do have plenty of depth is among their strikers.

Javier Hernandez was the midweek match-winner, Dimitar Berbatov is topping the scoring charts with seven, while Federico Macheda has looked lively on his recent appearances.

Then there is Michael Owen, who scored three goals in a week but did not have any involvement against Valencia.