Apparently, according to my son's German friend, he's 'not very good'. But i think that translates as..'he's not very quick or stylish but he's good with his head. Time will tell on this one i think!
Perhaps he might not be very good if your team is Bayern München. To play for your nation and be a DFB-cup winner (2009) and runner-up (2010 not playing substitute), also be part of a DFB supercup winning team and be a Europa League runner-up (2009) he cannot be that bad,