The idea that Pep has to bring in 7 - 9 new players for Man-City to click is ridiculous. Of Pep's purchases... Bravo and Nolito have had no impact at all, Stone is not as reliable yet and for Gundogan... injuries have not given him a chance to be a pivotal player. IMO, Pep as a manager has to be a bit flexible in how he can get the best of the squad he has with a bit of changes, not anything as radical as is being suggested.
I do agree that Pep has made some mistakes the biggest mistake in my opinion was loaning out Joe Hart to Roma as Bravo has been a complete bust for City and Pep this season. I also agree that Nolito hasn't had much impact at all, well I would say that he is not consistent as Pep would of liked him to be. Stones I think we get better as time goes on as he is still very young and learning Pep's style of play so I think next season we'll start to see a better performance by Stones. It will be interesting to see what Pep does in the summer transfer window.