Obviously Mourinho would is a great manager and would do well. Moyes is one that has done an outstanding job at Everton and deserves more plaudits imo. Either of these I would be happy with. However, if Solskjaer does continue his impressive start to his managerial career he too could be in with a serious shot, although I do agree he needs to prove himself at a bigger club.
My concern with Mourinho is that he needs to stay with the club on a long term basis, not 2 or 3 years in, he decides he wants to leave.
Why would anyone want Mourinho?* I'm not doubting his talents as a manager, but I just don't like him, and neither do most United supporters. Remember the fight he had with a United fan after we knocked Inter out of the Champions League? There is to much bad blood between ourselves and Mourinho.* We need someone who has either played for us, or coached for us*