It's an incredible rise to stardom. At 17 you're more likely to get a call from Michael Jackson than England manager Sven Goran Eriksson.

The reason I became a manager was to have full control over training. If you are a coach, you are bound by what the manager wants you to coach. The other reason is that I just like the company of football people.

I want players who are always striving to improve.

Are there Martians out there? I haven't got a clue. Is there life out there? I have no idea.

Do I miss football in Scotland? It keeps you really alive, that's for sure. Your heartbeat fluctuates. I'm flatlining at the moment which is actually quite nice but you need to go up and down to stay alive.

I'm a better coach now than when I joined Celtic. The longer you stay in any job, the better you become. If you lose your drive, your enthusiasm, your imagination, that experience is no good.

All the really good players I know, they all knew right from wrong. So many of them don't learn that at home nowadays.