In my opinion, Erik Ten Hag deserves to be kept for at least one more season because he has shown good performance with Manchester United this season by winning the FA Cup despite many players being injured. Therefore, giving him more time and opportunity to develop with Manchester United seems to be a more sensible decision to improve Manchester United performance.
With all the selfishness he has? I think this is not too worth it even though the fact that he managed to bring the FA Cup trophy cannot be denied but when talking about overall performance in domestic competitions, the character and attitude he shows is actually not too suitable if it is forced to be retained because after all we must be aware that in the end this makes the same situation repeated where I would not be surprised if in the end there will be several players who have personal problems when Ten Hag is retained.
In addition, his vision in my opinion is a little bad because he sees some players who leave, for example, loan players who can be made permanent like Sabitzer and Sancho, they actually play very well but because of poor personal vision Ten Hag does not see that which makes Dortmund clearly profitable because with the help of Sabitzer and Sancho they even reached the final this season so with poor vision from Ten Hag I don't think it's too good if this is forced on United.