This is a hill I am willing to die and have been saying for roughly two and a half years: Maguire is not better than Lindelof, at best case (and that is a big IF), he is marginally better. Better in the air, for sure, stronger, yes. But he also switches off every other game, is the easiest professional defender I have seen to dribble against, gets nutmegged in his 6 own yard, and is a poor organizer.
I think the new manager, whoever is him, should start Varane-Lindelof with Maguire needing to earn back his place. If he manages something close to his form for England (again a big IF, unless we play with 3 at the back), sure, put him in instead of Lindelof. If not, let him in the bench and take the money hit (something that we should also do with AWB, but in his case, he is not even good for the bench).