I've played at Anfield and you can look at The Kop and there are blue pockets all over. It's another level in Glasgow.
I didn't have a clue how big a club Celtic were when I joined.
I come from Glasgow and being from Glasgow everyone knows about Celtic and Rangers. It is a big part of most people's lives.
But then I always wanted to play for Rangers. Man United is a great club and Alex Ferguson is a legend.
I was brought up in Glasgow, and I was a big Celtic follower.
It seems everyone who knows about Celtic knows they are historical, and if you play here, expect diehard fans.
I could lose every Old Firm game I go into and still win the league.
Scottish football has always been about Celtic and Rangers, but we've rattled some cages and that's been good. The more competition they have, the better for Scotland as a whole.
I do enjoy the Scottish way of playing football.
I've always been mentally tough. Believe me, you have to be that way when you've been an Old Firm player living in Glasgow.
Juventus versus Milan is always a classic.
Celtic are one of the great clubs of the world. There's a pressure here that's different. You have to win every game. There's not a club in England that has that.
Glasgow Rangers. God I loved playing for them
I support Rangers and every time an Old Firm match comes up people will talk about it and look forward to it.
Celtic are a great, traditional club.
Whether people like it or not, you have to say the Old Firm are a major part of Scottish football. I know there is a lot of resentment from other clubs about that, but it's a fact.
The Old Firm clubs are not easy clubs to manage and sometimes I think frustration comes in that, in the end, make you happy to be leaving.
