The guy has a lot of talent, but I want to play devil's advocate.
He showed absolutely no defensive ambition for Germany (I don't watch him for Bremen). Perhaps this was a byproduct of the system that he played in, or perhaps it was his mentality. Does he defend at all for Bremen? Because, tbh, he seems lazy and the definition of a luxury player.
I don't understand the pressing need for a player like that, especially if he is not any good defensively. He could not fit into our 4-4-2, unless he was the second striker. We have about 7 strikers right now so that's not really what we should be looking at. And if we were after a striker, it would have to be a traditional #9, since that's what we lack.
When we play the 4-5-1 (25-30% of our matches), then he would be our attacking midfielder. However, our attacking midfielder has to be able to defend, and cannot be a slouch. Ozil, while immensely talented, would probably not fulfill the defensive obligations of our 4-5-1, and doesn't even fit into our 4-4-2 AT ALL. The only reason he works in Germany's 4-5-1 (4-2-3-1) is because Muller and Podolski both got back well, and because Khedeira and Schweinsteiger are immense defensively.
What logical reason do you all have to suspect that he would do well for us? Try and imagine him in either of our two systems, where does he fit in, especially in the 4-4-2? Can he do the job defensively in the 4-5-1? This guy is a fantastic player, but not for us IMO