If Manchester United can try that, then they will be ending the season at the bottom of the table this season. What happened to Chelsea last season might end up happening to Manchester United this season, because I'm sure they won’t be balanced this season. It’s really a wrong idea to sack a coach in the middle of the season, it’s really going to affect the club because the new coach will find it difficult to adapt with the players easily, and there will also be pressure on the new coach. Ten hag performance wasn’t really bad last season, maybe he just made some wrong signing and some of his players that are on injury is really affecting him, so I think he should be given more time.
You're making a point here cause the next coach might find it very difficult to manage a team that's trying to recover it's form and like you said it would hinder their growth and they might probably finish close to the bottom of the league, just like it happened to Chelsea when they sacked Tuchel of their new owner Bohely's arrival last season and it would be very bad for Manchester United.
Right now i think the best solution is stick with Erik Ten Hag and give he the right backinģ he needs in the upcoming window, as well as providing him with a Sporting director and other executives that are sports inclined not some business man like Mourtough and Ed Woodward, then maybe we could see some improvement in the teams performance