Rooney is already back in Manchester after United’s medical staff assessed an injury he actually picked up before he left. The good news is that Moyes now believes he may be back in action in three weeks and in time for the start of the season.
'It's a blow that we've lost him because he's been training well and looking very good,' said Moyes.
'But unfortunately he just felt something in his hamstring.
'We did a check and found a slight grade one injury there, which will probably keep him out for about two to three weeks.
Tight-lipped: Moyes talking during his press conference in Bangkok
'So I don't foresee any problem with Wayne starting the season and being fit for then.
'He didn't train the last little bit before we ca,e. He just felt his hamstring tighten, so we pulled him out and didn't think anything of it.
'It was only when we got here we knew we weren't going to train him yesterday, and we thought, as a precaution, we would check it out.
'When we went to check it we saw a small grade one [tear]. We could maybe have taken him on to all the other places, but he couldn't have played the games.
'So for the benefit of the player the best thing to do was to get him home straight away and quickly into his rehabilitation.
'Remember, when we return from this tour we've still got games in Stockholm, Rio's testimonial and the Community Shield, so he can play in those games.
'It's important we get players fit for those games.
'We didn't expect it. But what would be the point in taking any risks? There's no point in taking any risks.
'We'll keep his work up. With hamstring injuries, you can do work in the pool, you can do work in the gym.'
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Manchester United Supporters' Association, The Story Continues
