Indeed, he'd be in at number 2 (Bulut, not Osman). I think his touchline attire lets him down, he hasn't quite defined if its full casual or Luis Enrique/Pep Guardiola Zara Man. He needs to make his mind up, i think that lack of confidence rubbed off on the players.
Osman aged very well, like a fine wine. If we count Danny Gabbidon, nobody even close!!