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I have never had any contact with Bayern Munich, let alone have agreed personal terms.

Just like every person who works for Dortmund is a fan of the club, it was the same at Mainz. When I was a player there, we had 800 supporters on rainy Saturday afternoons, and if we died, no one would notice or come to our funeral. But we loved the club, and we have this same feeling at Dortmund.

I had three very successful years in Germany with Borussia Dortmund, but I had the opportunity to move to one of the biggest clubs in the highest-profile league in the world.

I am grateful for the willingness of both Jurgen Klinsmann and Everton manager Roberto Martinez to afford me the opportunity to spend time with my kids.

I felt within myself that I needed to change what I was doing. I needed a new stimuli. So the interest from Manchester United was a perfect fit.

At Barcelona, I had the best players ever, and they helped me to be a successful manager.

My best moment? I have a lot of good moments but the one I prefer is when I kicked the hooligan.

I knew I could play really well in one game, score the winning goal and then, come the next game, I wouldn't play at all or I might come off the bench for the last five minutes. So I was frustrated towards the end of my time at Spurs. I wasn't happy.