After what happened to other stars at United, Muller should think 100 times before agreeing to such a move
It would be legendary for Müller to end his career in Bayern at the club where he started and spent his entire career. As a last resort, he could go to Saudi Arabia; going to United means a high probability of ending his career in an unpleasant way in an atmosphere of scandals and a collapsing club.
For United, this is also a strange transfer - another temporary option, another straw that the head coach is trying to grab onto.
Previously we saw Eriksen, Weghorst and Evans which proved to be not very successful and now they are trying to bring Muller who has entered the final phase of his career.
Indeed he is also a very good player, especially the experience and achievements he has but the bubdesliga and EPL are very different, this could be a blunder for Manchester United.