Pellegrini has had Man City performing about par for the talent they have on their books during his time there. Certainly not a lot more or less. Nice bloke with a lot of class though.
Tbf when you sign players to sell them to clubs like Arsenal then you don't sell them to Arsenal there's every chance the player will go a bit radge. Also our higher-ups notoriously being absolute wankers behind the scenes will no doubt have been helpful as ever.