Sad to see a decent keeper deciding they don’t want to play anymore.
I think strong competition will do him good. He went to Torino, West Ham, and Burnley as number one and struggled at all three. His best form for City was when he was in competition with Shay Given, and had a point to prove. His problems have come when he's become complacent. Pellegrini dropped him in the 13/14 title winning season, and he bounced back. Having to fight for a first team place will benefit him.