Quote

I may not be the most physically tough player, but I think mentally I'm right up there.

I'm quite hypercritical of myself. It's a very Scottish thing, always thinking that you've got to be that bit better than everyone else to be good enough.

I think I'm a really tough player.

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.

If you grew up in a household with a football coach who looks like a drill sergeant, you would think you would be tough.

There have been moments in my career when I've had to be tough and I've had to step up to the plate - but usually that's because a man has underestimated me. But other than that, I wouldn't say I'm a tough person.

When I was 18, I couldn't wait to move away. I was like: 'If I ever have to come back here, I'll kill myself.' Glasgow seemed like failure and death to me back then, but not any more.

To me, football is so much about mental toughness, it's digging deep, it's doing whatever you need to do to help a team win and that comes in a lot of shapes and forms.

But then I always wanted to play for Rangers. Man United is a great club and Alex Ferguson is a legend.

I am a pretty tough guy. I'm an old hockey player.