"I have asked myself that so many times. I know what I can do, I just haven't shown it. It's frustrating, Jesus, no one wants to go and play badly. I just feel that the more games you get the better you play. It gets to your confidence when you're not playing, or getting on for five, 10 minutes.
"When I signed, the manager said he saw me more as a central midfielder than a wide player. He said he saw me as someone different to what he had already, someone who could make runs beyond, third-man runs, playing off the strikers and scoring goals.
"It was very difficult to leave Celtic.
"When I heard Man U were in I was gobsmacked, delighted as well, but at the same time I was thinking I'd be leaving a club that I'd been with since I was 15. There was probably only one club I would have left for and that was Man U. The chance to play for the two clubs was great. I made my decision and I don't regret it.
"Personally, no, I don't think so. Others can argue with that but I don't think so, no. I think it's always up to the manager. You can put pressure on him, y'know, but the manager sees it his way and he picks the team. I want to go back and I want to play there without doubt. But it's the manager's decision.
"It hasn't gone as well at Man U as I would have liked, I know I can do a lot better than what I've shown so far. It's just a case I feel of getting a steady run in the team to prove that. I still believe, myself, I have inner confidence, that I can play for Manchester United. I haven't given up at all and hopefully I can prove the manager wrong.
"I don't know, to be honest with you.
"I just see myself here until 3rd January and then I go back to Man U. I'm contracted until 2009 and that's so far away. I want to be playing football and I know where I want to be playing it. But I'm here for now and I'm focusing on that.
"The way the move came about was so quick. We were away in Europe, it was the Lille game in Paris and when we came back the next day the manager said Leeds are interested and how it would be good for me to get matches. I thought, 'Jesus, it would be great to be playing again.'
"As for what I see, I see myself going back to Man U, we'll see how the manager sees it. I've just thought of playing well here and impressing him while I'm here. But I don't know what happens on January 3rd, we'll see what he says."