Manchester United striker Wayne Rooney fears he could be frozen out at Old Trafford as Sir Alex Ferguson reportedly considers selling the England frontman for £40m.

According to the Daily Mirror, Rooney's relationship with the United boss has broken down, and Ferguson is now ready to cash in on the striker following the arrival of Robin van Persie.

Rooney was dropped for United's match against Fulham after a lacklustre display at Goodison Park in United's opening Premier League match.

The official line was that Rooney, short of fitness, needed more time to regain his match sharpness. But reports suggest Ferguson relegated Rooney to the bench following a complete break down in relations between the two.

The England striker was close to leaving Old Trafford in 2010, but eventually signed a new contract at the club. Ferguson was thought to be instrumental in convincing Rooney to stay then, but the United boss is reportedly ready to offload the 26-year-old for £40m next summer.

Two years ago, Rooney was thought to be considering a shock switch to rivals Manchester City. But should the former-Everton forward become available next year every major European team would surely be interested in securing the services of the United star.

A fall-out with a key player would not be a first for Ferguson, as the United boss has seen off Jaap Stam, David Beckham and Ruud van Nistelrooy among others in his time at Old Trafford.

Following the capture of former-Arsenal captain Robin van Persie, United fans couldn't wait to see the Rooney-RVP partnership.

But Rooney will now be out of action for close to a month after suffering a nasty gash in the final minutes against Fulham.

The Manchester United striker posted a picture to his Facebook page with the message "Gutted to be out for a while but my leg will be OK which is the main thing.”

Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: