The question is if Van Nistelrooy is promoted to be the head coach will he be a better coach than Erik Ten Hag? Manchester United fans shouldn't push things this far, let Ten Hag stay till the season is over. What the club should do is not give him any money for players again, they should manage what they've got till the end of the season.
All of that can only be answered when Van Nistelrooy is actually appointed as coach to replace Ten Hag and prove his capacity because when talking about speculation in this case it will be a little difficult considering we must be aware that when at Manchester United with the current conditions it is actually full of risks and there is no guarantee when someone replaces Ten Hag at Manchester United can make Manchester United's performance better.
We still have to continue to wait for Ten Hag's actions when the season returns because for now it is certain that Ten Hag is experiencing problems at the beginning of this season because Manchester United's performance is still not lifted as expected and if indeed he still wants to stay in the coaching chair at this time, the opportunities that are still given must be maximized as best as possible from now on.