I think it's an excellent signing too. Used to be a big fan of his. Been worried about his performances during the last two seasons though, but most Bremen fans seem to think that he's been underwhelming for the simple fact that their entire team suck.
He has to bulk up a bit physically and there are concerns over his ability to stay fit, but it's still a class signing all things considered. We have put some distance between the first team and the likes of Squillaci and Miquel too, which is the most important thing.
