Mourinho would have probably preferred a keeper more commanding in his box, but he didn't have issues with the renewal and he even granted De Gea's wish for the club to hire his keeper coach of choice. The most baffling thing about it is that the club decided to make him the highest earner in the world in his position in an age when the role has been gradually moving further and further away from his better attributes. Then, we doubled-down by making a centre-half who belongs in the same category as De Gea the most expensive defender in the world. At other clubs, like Madrid/Barcelona/Bayern/City, there wouldn't even be a discussion on executive level about the "usefulness" of players like Fred, VdB or McT, let alone players who have been good servants of the club.
If you expect a "decent profit, as you say, i wholeheartedly agree. But if your expectations are for Rashford to fetch an Mbappe-like fee, Garnacho to be around 100 million and you also treat Shaw like "one of the best FBs in the world" and you also want to turn a profit from selling Martinez, you'll be disappointed. Very disappointed.