~Snip
In this situation the manager still has to be sacked cause they have lost control of the dressing room already. Managers have a role to keep the team playing in synergy and all players playing to their top potential, if they cannot do that, the owners cannot change the entire squad cause of the coach and will opt to change the manager instead and remove one or two problematic players.
Of course, this is the right choice in my opinion. A coach who doesn't have a good relationship with his players both in the dressing room and on the field will be fired instead of replacing the entire squad. The coach must have the ability to maintain good relations between players and the team. It will even be better if the coach manages to maintain a good dressing room.
Ten Hag may have clashed with some of the Manchester United players so far and perhaps he is starting to not get the respect he should from some of his players. I'm not sure if that's true, but it might have happened within the current Manchester United squad. I'm surprised Rashford really isn't in his best form this season, it's different compared to last season.
If the relationship between the coach and the players is not good, the team cannot expect good performance. The atmosphere of the dressing room should be calm. It increases the confidence of the players. A friendly relationship develops between the players. The understanding between the players is stronger. Appropriate measures should be taken by the management and coaches to maintain a calm atmosphere in the dressing room.
I don't know if TenHag has a good relationship with his squad players. If Ten Hag's relationship with the players is not good then surely the management should fire the coach or sell the players. If the relationship between the coach and the players is not good, its bad effect can be seen in the match.