Great player, good knowledge of the game and positioning for defenders, but arrived here when he was past his best and beset by niggling injuries that limited his involvement.
I suspect like Casemiro, Varane came to a Manchester United that was not the Manchester United he expected, and you can understand from his point of view as he comes towards the end of his career that he doesn't want to be playing in a side that's struggling, with a manager that wants to stick to his guns, whatever the cost.
He will be looking for 'a soft place to fall' next season.... don't blame him and wish him well.