I've been playing football for a while, but Guardiola really made me a better player. I was 29 when I started working with him, so I wasn't very young, but if you see the steps I made thanks to him, it shows you what he is capable of doing. Guardiola didn't just put me on the flanks but in other positions as well.
I think I had a positive development at Chelsea. I was very young when I arrived, only 20, and the problem I had was injuries.
I'm a very explosive player and need everything to be right. I started working with an osteopath the last year I was in Madrid and have stayed with him.
I had some very good years at Madrid.
Messi is in a different world. He is the best player in world football, without any doubt.
If you're at school, children who play football, you give everything to win... If you don't succeed, that's a huge disappointment. Then it's okay to be sad, but better times are coming.
Only being able to watch is the hardest thing for any footballer.
Playing United is the sort of thing that really gets the best out of me.
I always want to play. It is important to gain match rhythm.
There's always so much to improve, no matter your age.
If Mourinho loses 4-1, he doesn't sleep well.
The best and most important step of my career was when I moved here - and Louis van Gaal brought me from Madrid to Bayern. It was the best move of my career, and it's thanks to him.
I have always said that I do not want to play in the Europa League.
Bayern Munich are a team that absolutely have to play in the Champions League.
I'm always a realist, and I know the world of football is fast-moving.
After my debut as a pro for Groningen, I was at Eindhoven for two years.
It was a big step for me in the Netherlands: to leave home at the age of 18.
I went abroad when I was 20, three years at Chelsea, a big club. Then two years at Madrid.
The older you get, the better you get to know you body.
I want the good players of other clubs to stay in the Bundesliga.
