He no longer has a place at Old Trafford, somehow he will be able to handle the bad treatment of the fans towards him if he plays in an important match because before getting the unpleasant treatment he has made enough mistakes, although of course that is not the main choice for Ten Haag making him the starting line up, many things could have forced Ten Haag to make him the main player when a player in the same position as Harry Maguire was injured so there was no choice but to choose Maguire.
Manchester United shouldn't set a high price to sell Harry Maguire even though it would cost United a loss because they had bought it from Leicester at a high price because it's impossible for a club to want to spend big on a player whose performance is not good and even often makes mistakes to the detriment of his team because it was like throwing money away even though there was a chance he might improve himself but the purchase was still a high risk.