I don't think Manchester City will perform the same way next season as they did last season. Manchester City has better players, and with the kind of coach they have who is well experienced, it is very certain Manchester City will try their best to improve their performance. Already, the club is trying to put things at its best. Manchester City will still be among the best teams next season, which will make the league more competitive.
Overall, we cannot predict the strength of each team because the transfer window is still open, meaning they could bring in new players who could increase the strength of the squad. Indeed, so far several teams have stood out with their recent achievements and also new players such as Chelsea, Liverpool, Arsenal and Manchester City but of course there is still potential from other teams. I'm just curious how Manchester United and Tottenham will start next season moreover they are not very active in the transfer window.