If he were to choose a team, I think it would be Manchester City. Manchester United performed poorly last year and won't be playing in any European competition this year. They'll only be playing in the Premier League. Why would Donnarumma, the main goalkeeper of last year's Champions League-winning team, make such a choice? Manchester City, who play in the Champions League, would be a more logical choice.
Actually there is no problem even if Donnarumma strengthens Man Utd rather than having to fill the bench maybe for almost a season because Chevalier is sure to continue to be the starting line up for PSG as long as he is fit and besides the competition in the Premier League is very competitive and tiring besides he is sure to be a core player for Man Utd but I heard that Man City is more aggressive in their approach to Donnarumma, it can be said that Man City is one step ahead in this agreement.