He always seemed pretty unreliable until this season - very athletic and capable of some amazing saves but his positioning and reading of the game often suspect.
This year, however, until recently, it seemed to me he had taken a big step towards becoming a great GK and was always on the right spot and saving City's ass whenever I would watch them. These past several games, however, he's hit a poor patch ... I am guessing it's temporary but the title seems to be slipping away from City now and the players look like they know it.