Amorim must have a list of players ready to be released. But with the consideration that he also has to get replacements with better skills. If Amorim does not get what he wants in preparation for next season, maybe United's situation will not change. I'm sure Amorim is thinking about many changes in the team, and there will be a few who will be retained. But it may not happen in one summer transfer window. There will be many adjustments that Amorim makes to his team.
If you want the team to develop more, then it is appropriate for Man United to release some players who do not have a big influence on the club's success. Several names are on Amorim's wish list for next season, but they will have quite a hard time bringing in these players because next season Man United will only play in the Premier League. The availability of a small budget can also be a challenge for him so that some targeted players cannot be brought in easily.
If the situation does not change, then I'm sure Man United next season will not make many changes that the coach can make and of course they will have quite a hard time keeping up with other teams in the fight for the championship title or just chasing the top three positions in the standings.