I think the chances are slim. When was the last time Mourinho undertook a major rebuilding exercise? Porto? A club like us are not his spec.
Even if they win the cup and qualify for CL, United have under achieved. The fans are unhappy, particularly with their style of play and they've had a number of seasons of poor performance (under two different managers). They know they need to get it right soon. They know Mourinho could get any job he wants, they know if he takes another job they'll have to wait another couple of years. He's available now and their manager is under achieving.
It'll happen in the summer whatever happens to United this season.
The expression used most to describe Everton this season is " under achieve". A lot of managers will look at Baines, Stones, Jagielka, Lukaku, Lennon, McCarthy, Besic, Deulofeu, Barkley,Coleman , Funes Mori , Robles and see that there is a solid basis there to work with.
It has been suggested that there could be 100m to spend this summer, if that money could be used to sign five quality players then add those to the best of our youngsters coming through and you are looking at a very decent squad.
It may be that a new manager may see players like Oviedo,Mirallas, Cleverley as having a role to play , and of course there is Gareth Barry.
We should not be looking at recent performances to judge these players. Look at some of the better performances this season and add four or five players to those teams. That is what can be accomplished.
First and foremost I think some of our players have to work a lot harder than they do at present and that is the first challenge facing a new manager.