The atmosphere generated by the fans in Celtic's stadium for our visit was the most impressive I've ever witnessed. The grounds of Liverpool and Manchester United are good and the hostile feeling of playing against Real Madrid in the Bernabeu is also excellent, but the atmosphere against Celtic was the best.

I liked the Paul Ince and Roy Keane partnership Manchester United had. They would have been my team had I moved to England.

I'm a footballing romantic just like Johan Cruyff. We like football that is attractive, attacking and easy on the eye. When you win playing like this it's twice as satisfying. I've always played attacking football: my footballing ideals are very clear and well defined. I've grown up at Barcelona with that style and that's the one I like. I think it's good to win like that, by taking the initiative right from the off.

I've no regrets at all, but I still think at times that I would have loved to play in England. You live football over there; it's a great culture. People respect you more; it's more difficult to find respect in Spain. There is more criticism here.

Celtic, like Barcelona, are more than a football club. Our clubs are a symbol of a culture and community that has not always been made welcome in their respective countries.

In football, the result is an impostor. You can do things really, really well but not win. There's something greater than the result, more lasting - a legacy.

The way I see it, Messi is the best player in history. He is the one who changes the course of games; he's the best. There is no comparison in my view; he's the world number one and by a margin.