If Amorin can discipline his players to play much better I think that winning the UEFA Euro League is not a difficult thing for them, seeing from the quality that Manchester United has also not bad in terms of players but their discipline is lacking in running training and also on During the matches that are performed, often what Man United players show are not disciplined either in carrying out attacks and defenses that make them defeated by their opponents even by teams whose quality under them, the trip in the league can still be tried if it is true -In truly can play much better.
It's not discipline that is the problem because I'm pretty sure that Amorim is a coach who prioritizes that and all his players will definitely obey him (Rashford has been a clear example, so it's likely that other players don't want to suffer the same fate). Man United's problem is the lack of adequate and quality, where not many players can really contribute to their new strategy.
The solution is to undertake a major overhaul, but that is obviously not possible now because they don't have much funds left, and it is not easy for Amorim to simply sell his players with the reputation that Man United has now.