The only best idea to recruit the new coach. This is the only possible thing to be done by united. I don't even see other possible solution to improve manchester united to be even better.
MU needs to get a new coach that has brilliant idea like mourinho which had given united an europa league trophy in the past. Mu doesn't need a problematic coach like ten hag.
Sorry, but what the hell are you talking about?
You say that they don't need a problematic coach and at the same time, you suggest Mourinho as replacements. Is there a more problematic and eccentric manager than him? And a few years ago they already tried with Mou and he was not fired exclusively because of bad results, but also because he created a very toxic atmosphere around him.
Otherwise, they must first get rid of all mediocrity from the players, and only then think about changing the manager if necessary.