Manchester City will be the strongest team if they manage to get Mbappe because the quality that Mbappe has will encourage them to become a team that has goal-hungry front players. However, Manchester City efforts to get Mbappe are certainly not easy because Real Madrid will be at the forefront of getting Mbappe. But everything could change if Mbappe is more interested in playing in the Premier League then Manchester City or Liverpool will be his goal.
It would be great to watch Mbappe at Manchester City. I'm sure every Manchester City fan would want that. But we know that Mbappe had some problems before when he was in the same team with Neymar and Messi. He might have similar problems playing with Haaland. There are younger players at Real Madrid, so he can gain respect from them. And we can see him as a dominant character at Real Madrid. But when he plays with Haaland he might not be the dominant character. I think he will be more successful at Real Madrid.
The problem is that it will not be realistic especially for the financial problems that Manchester City has now.
With some pretty expensive players at Manchester City at the moment it is clear that bringing Mbappe is difficult to do unless he takes out some of the core players they have including Haaland.
It is difficult to bring together two players of Mbappe and Haaland's caliber in the squad which makes it unrealistic to expect Mbappe to be at Manchester City for next season.
In addition, if this possibility occurs I do not dare to say they will be fine in terms of FFP because now the issue of violations in Financial Fairplay for Manchester City has always been a never-ending issue so when there is a possibility of Mbappe to be in the Manchester City squad next season I do not dare to guarantee the reaction of several other clubs in the EPL about this because it will seem partial and the financial authorities in the EPL only look at small clubs like Everton or Nottingham but do not care about the finances of big clubs like Manchester City.