I think the problem is that the dressing culture is horrendous and toxic. For the last ten years, various players have shown that they could do whatever the fuck they want at united and not get punished for that. They have shown that even if they don't train well, or do defensive work (for example: Pogba) they still are not held accountable by the higher ups in the club.
Now the problem is even if those previous deviant players left, the culture created by them still lingers on. They have clearly showed that even if standards are not met, the managers (whoever that is) cannot enforce high standards because managers themselves are not provided enough power by the higher ups.
Any new player (who is not self motivated) coming will see what stunts the previous players pulled off, and think why can't they do the same? why not just collect the paycheck and not give 100%? If Mourinho/Van Gaal/Rangnick couldn't enforce standards, why would this manager be different?
I may be wrong but unless the higher ups in the club do something or place strict rules to enforce discipline for the players, and make an example, I don't think the club is going to change regardless of who they bring in as manager.
Now the problem is even if those previous deviant players left, the culture created by them still lingers on. They have clearly showed that even if standards are not met, the managers (whoever that is) cannot enforce high standards because managers themselves are not provided enough power by the higher ups.
Any new player (who is not self motivated) coming will see what stunts the previous players pulled off, and think why can't they do the same? why not just collect the paycheck and not give 100%? If Mourinho/Van Gaal/Rangnick couldn't enforce standards, why would this manager be different?
I may be wrong but unless the higher ups in the club do something or place strict rules to enforce discipline for the players, and make an example, I don't think the club is going to change regardless of who they bring in as manager.