To be honest, I'm almost certain he's bullshitting. His longest tenures as a coch have been here and at Real, 3 years each... Don't think he'll stay here nine more years than that, not with his personality.
Basically they said that selling him for 40m was the best piece of business they have ever made because he's nowhere near worth that, said he's overrated and that he won't reach a high level. I read that Matic is miles better too and some even prefer Enzo Pérez.
I meant in terms of consistency + quality. When City is firing at all cylinders they are a nice team to watch, but they've had a lot of stinkers aswell.