I have not seen any significant improvement since Amorin came to Old Trafford, Manchester United is still a team that fills the middle of the standings. Amorin's target in the Premier League is to finish in the top 4 of the standings because Amorin wants to bring Manchester United to the most prestigious competition in Europe, the Champions League. And of course this is not an easy target for Manchester United to achieve, considering the competition at the top of the standings is quite tight.
On the other hand, the target to win the UEFA Europa League trophy can be said to be quite realistic because there is still a chance for Manchester United to advance to the next phase, although in the remaining three matches they will face a fairly strong team. This is not easy, but if Amorin is able to make positive changes in your body and is able to perform more consistently, then everything will be possible.
This is true, I said this on their very first game, because I knew what I saw and I knew that the team can't play the style Amorim wants them to play, this doesn't make Amorim a bad coach, and doesn't make United a terrible team (although they are, not because of this reason) it was just clear that it is not a good fit at all. United is required to play with way too much press now, and they are not good at it, and everyone said wait for it and give him some time.
Now it's been a while, and we are still seeing them not do that well, and people are still saying it is too early to call. I think it's enough amount of games to say that both sides could be decent, but the reality is that it's just not fitting together that well. Only way to improve this would be letting Amorim make transfers that would fit his system better, and if they can do that then they are going to end up with a good result, but with the team he is given right now? I do not think so.