I would say Manchester United management should look for a new coach now. Ten Hag can't do well with this squad, it's proven. And yet if Ten Hag is given a chance then Manchester United's performance will be poor next season. Manchester United may not get the benefits of appointing a new coach this season. However, their chances of doing well in the coming season will increase. However, it is unlikely that Manchester United will sack the Ten Hag before the end of the season. Despite spending a lot of money, Manchester United have not fared better.
That's exactly my suggestions because if he continues to coach Manchester United I'm afraid they will surely get more worst next season because Ten Hag strategy is not helping Manchester United anyway at all because even if they did not perform too well on there last season but cannot compare there last season with there performance on this season because is obvious that they played well last season than this there current season.
But however I don't know if Ten hag is not watching Manchester City matches to see how coaching pattern should be for a club to have a good performance because if he has been watching there matches he would have realize that he is not helping Manchester United in anyway, actually at first I was thinking the reason why Ten hag is having difficulty to handle Manchester United was because he was still new in Manchester United but it has become obvious that he is not capable of leading Manchester United to were they are supposed to be, so if the management did not take action after this season they will face the same challenges next season.