Manchester City will miss a very wonderful coach and he will be very hard to get type of Gudiola in Manchester city for now. The new coach will surly sigh some good players but guidiola will always be the best coach for Manchester City. What I can said is that Gudiola have keep good players in the team before he leaves and the new coach can enjoy them even without signing new players and they can do well in the premier league next season but is good to get more good players in the team so that your club can be more stronger then before.
I highly doubt the new coach will maintain the same strategy Guardiola used. Therefore, it's clear that the starting eleven Guardiola used won't be used by the new coach. He's the type of guy who likes to change the starting eleven all the time, even when he has a winning lineup. I saw that at Chelsea; he changed it constantly. Honestly, I don't see Manchester City finishing in the top four with this new coach. I see Manchester City falling much lower, just like during his time at Chelsea. If Manchester City had hired Mikel Arteta to replace Guardiola, I'd be convinced that Manchester City would have remained strong.