Greenwood and Anthony has been amazing in their respective teams and I think they can help Ruben Amorim to improve the performance of his team if they are brought back to the team.
I don't know, but maybe for Anthony, Amorim won't need him. Besides, Betis also seems to have an interest in buying him. Amorim might be more interested in bringing in some new players.
Players who are loaned to other clubs allow them to play better with competition at the club and competitions with different pressures. Amorim will be under pressure to improve United's performance next season, he might consider that, but he will see the needs of his team.