Let's say that yesterday was a very eventful day in the market.
Manchester city made 2 very important transactions
Sold Akanji on loan to Inter and bought Gianluigi Donnarumma from PSG
Napoli made the purchase of rasmus Hojlund official.
All very good market moves
Manchester City is going nowhere this season trust me if time is not taken Manchester City might end up playing Europa League this season, we're still talking about their poor performance they're busy selling more key players, what has come over pep, did he want to kill the team before he will leave the team, and for Rasmus Hojlund I think Manchester United gave him a lot of time and chance to prove himself but it all fails, now that he's gone to Napoli let's watch he's performance, if his performance is still poor we will blame him and if he performs good we won't be surprise after all any player that left Manchester United is always gonna play well so I wish him the best of luck.
Who are those key players you are talking about? A key player is a player who is relevant as of today and in the future, and not a player who used to be important for many years but is now too old to reach that same performance level consistently or is injured a lot. Those are not key players anymore and if I go through the list of players that left Manchester City, I can't see many key players who left the club.