Injured Wayne Rooney out of Man Utd pre-season tour

Wayne Rooney: crocked pre-season. Photo: PA

Manchester United have confirmed striker Wayne Rooney will fly home from the club's Far East tour after being ruled out for a month with a hamstring injury.

Rooney suffered the injury in training earlier today and scans have revealed the full extent of the damage.

"Following a scan this evening on a hamstring injury sustained in training, it has been decided Wayne Rooney should return home immediately for further assessment and rehabilitation," the club said in a statement.

The news is an unexpected development given United only landed in Bangkok this morning and went straight to their hotel for a short rest ahead of what turned out to be Rooney's single training session.

Sixteen hours later he is on his way to the airport to begin the marathon journey back to Manchester.

If Rooney is ruled out for a month it would mean he could feature in the Community Shield against Wigan at Wembley on August 11.

However, given his obvious lack of match practice, it is difficult to see how he could be involved in the following week's clash between England and Scotland, or start the Premier League opener at Swansea on August 17.

There was even a picture distributed of Rooney at today's training session laughing with Patrice Evra that was distributed by United's own photographer, although the pair were sitting on a step and the forward was not wearing boots.

And amazingly, the incident comes just a day after manager David Moyes revealed United staff had told him Rooney had returned for pre-season training in his best shape for years.