Manchester city is in an unstable condition in this transfer window because they have to make a big effort in keeping their players from leaving in this transfer window. Previously, two of their core players had been recruited by other teams in this transfer window, such as Gundogan who was recruited by Barcelona and Mahrez who was bought by Al Ahli. So recently, news has emerged that Bernardo Silva has started to be linked with a number of big teams in Europe and that Kyle Walker has also been eyed by a big Bundesliga team.
I think Manchester city should be able to hold Bernardo Silva and Kyle Walker for next season because they had a big influence on Manchester City game last season. So Pep Guardiola has to watch out for that if he doesn't want to lose a lot of their star players in this season's transfer window.
Actually this is a challenge for a club that has reached the highest level when they have got all the titles so some players think that they need a new challenge in another league, generally those who think like this are the old players therefore it would be difficult to prevent them from leaving. For Manchester City it's not really a problem because they already got a replacement for Ilkay Gündogan he is Mateo Kovacic.
on the one hand its not only players who have thoughts like that even Guardiola as a coach has rumors that he will leave Man City for a new challenge and this is very natural for me. I think Kovacic is quite on par with Gundogan so it doesn't matter if Gundogan leaves Man City.
this situation will certainly also be experienced by other teams when their senior players or their mainstay players move to other teams to seek new challenges such as Arsenal, MU, Newcastle also feel the same way.
what is certain is that a reshuffle like this has the goal of mutually reinforcing the performance of each team.