Football should never be a worry. It should be exciting. When a child plays football outside, he doesn't need to worry. Professionals should be the same.

There are some people who might have better technique than me, and some may be fitter than me, but the main thing is tactics. With most players, tactics are missing. You can divide tactics into insight, trust, and daring. In the tactical area, I think I just have more than most other players.

Speed is often confused with insight. When I start running earlier than the others, I appear faster.

It's disappointing to see how football, the world's No. 1 sport, is not No. 1 when it comes to development. It seems to me that a wealth of practical football knowledge is being squandered.

It's part of the sport, getting hit.

Had I been a great athlete, I'm not sure I would have even gone into coaching. I may have turned out feeling that my life ended when my athletic career ended, as happens so many times with various athletes.

I don't mind fans coming up in a friendly, respectful way. That's all part of the fun of being a top tennis player. But if people take pictures without permission, particularly if my children are in the shot, I feel uncomfortable.

When you're a kid that's all you want to do, go out and play football.