Saying that, Rafa is available at the end of the season. If they want a temporary manager that everyone can hate on but will sort the team out for next manager then he is your man. He's done what no-one else could do at Chelsea and that's push out the "old guard" whilst building an understanding between the younger players.
Moyes strikes me as the kinda guy who's about 75% to turn around and say "I'm not leaving Everton, they have put their trust in me and I have unfinished work to do here and I love this club yada yada".
I feel sure it'll be Mourinho tho. Just the way he was talking in those Madrid v Utd press conferences convinced me he was next Utd manager. And him and Fergie are good friends by all accounts.