I've worked really hard on getting into the box more and being closer to the goal, which I think has brought real benefits to my game. It's definitely improved my goal scoring.

I would love to have a race against Usain Bolt one day! It would certainly be a good challenge for me.

I've worked really hard on getting into the box more and being closer to the goal, which I think has brought real benefits to my game. It's definitely improved my goal scoring.

I've played in France. There, in many matches everybody is already happy if he can secure a point. Here, in Germany? Forget it! Everybody wants to win. The last-placed team in the standings would take any match with the ambition to win it. That makes it so hard, even for the best teams in the league.

I always set myself new goals. I always want to do better than I did in the past. I always want to achieve things I never achieved before.

Didier Drogba and Samuel Eto'o, two fantastic African footballers. So successful. And very nice characters as well. I got the luck to know them personally. They helped me a lot.

In football you never know, but generally speaking, I feel more than comfortable here [in Borussia Dortmund]. There' s no place on earth I'd rather be.