What the club SHOULD do, is go all out and try to get manager in the summer, one that can (re)build a team. Many want Nagelsmann, but I'm not so sure, though I would be OK with him.
But what will happen is that Mourinho will stay, even though we'll get well beaten in the LC final, and we will limp to a 7th or 8th place in the league. The disjointed performances will continue beginning of next season, and Mourinho gets sacked early November. This means we'll have to make due with an interim manager, and it will be yet another wasted season, where we are nowhere near winning anything.