Won't there? I don't think there are ever many undeniably great managers around. Right now there aren't any managers close to Pep and Klopp. Maybe one of them will turn out to be, but Mancini was coming off as good a CV as Flick or any other manager in the tier below Klopp and Pep right now. It's only with time you can say he was an average manager.
There’s always going to be good managers around, and up and coming managers making their way in football. And yes, I think there was a huge gap to what they had, to what they now have. And Guardiola will make the job a more attractive one to other coaches.
Mancini yes, happily conceed he did really well for Inter before domestically, although I seem to remember he was rather rubbish in Europe, which is always a bit of a warning sign. Pellegrini though had a rep as coaching ‘nice football’. Nothing much else. He was an average coach yet won the league and went to a CL semi final.
What I am saying is - a coach who isn’t at the level of Guardiola will domiante at Man City with these sort of squads, I truly believe that. It’s ridiculous the depth they have, to the point of being laughable now.