Per Mertasacker, what a great man, Leads the team, is surprisingly good at how slow and tall he is, has shown why he is a real contender for a German national team spot, but always needs a quick other Central defender to help him out when the ball is behind him, but when you have someone like Koscileny, then there is not much to worry about, but Koscielney is now injured and we will see how Vermalen will do.