Everything was professional at United. They really take care of their players.

I think the day you underestimate the importance of the job at Celtic Football Club, that's the day when you fail. I've seen a few coaches doing that.

My managerial ambitions were the same as I had as a player: to become as good as possible and to join the big teams in the big leagues.

In England, somewhere. I want to be at a big team, in the big leagues again.

I love business and that's why I go on other people's board because it is my hobby. Some people join a tennis club to do things in their spare time. I join boards because that's what I love.

Fans give me abuse all the time. Nearly every team does that. If I wasn't a good player, you wouldn't feel like you need to boo me the whole game. So do that if it makes you feel better, but it does spur me on. It's like, 'You expect something from me; that's why you're doing this,' so I don't mind it. They can boo me all day long, really.

Money is not important to me. I've got enough. The organization has extremely blessed me. I'm here to play football, and that's what I want to be known as.

I love competing, and I love throwing the football.