It wasn't an easy job because Ruben Amorim came when Man United was in a slump and what was worse Man United did not have much money left. Therefore, Amorim must be really wise in determining which players he must release so that Man United can quickly get additional funds to bring in the new players that he wants. With their current achievements, it is clearly not easy to make a quick sale at the price they expect, therefore, he really has to slash prices so that teams will be interested in the players he wants to sell.
No matter how bad Man United's financial situation is, the team management will try for the sake of the team's performance to be able to win the title in this European league. In my opinion, this is not something to worry about as long as Amorim is really experienced, he can definitely bring in suitable players to help MU without having to buy players at expensive prices.
Amorim only needs players who really have high productivity and of course all of that doesn't need to waste too much money. We see several teams that only have ordinary players but they can have stable performance.
I hope Amorim knows the players who are no longer productive and of course the defense line that needs another overhaul.