Maybe they are just lacking in putting pressure on their opponents, and with Amorim this might help them to rise again from their slump. However, with the news I found about Amorim stating that he could not fully implement the sporting style of play at Manchester United. I think there is a possibility that they can rise again from their slump, because I think Amorim can provide good education to his team. In addition, there are several Manchester United players who can shine under Amorim's guidance, with them Alejandro Garnacho, Diogo Dalot, Rasmus Hojlund, Manuel Ugarte, and Bruno Fernandes. With their respective skills I think Amorim will give them more training.
Yes, that's true because if Amorim brings the style of play from the previous team and will be applied to MU, it will not go well. And I'm sure Amorim understands how competitive the competition in the EPL is and must have a really deep strategy.
Amorim only needs an understanding to explore some of the obstacles that must be removed from MU and also provide a little change to create stability in Man United performance.
If Amorim succeeds in the next 10 or so matches, I might believe that he is able to bring MU back to its glory days.
The truth of the matter is that not all players are suited to all certain style of play, so in other for Amorin to succeed as the manager of Manchester united, he just have to first of all know the qualities of the players at Manchester united and look at a playing system that best suit them, then on the longer run he can bring in his own types of players while fully implementing his playing system, so it should be a gradual thing in other to succeed, but if he decides to make a very huge changes at the club at once, he might struggle, because right now he just has to make due with the qualities of players at his disposal in other for him to be a success.
Then lastly, their is a saying that to whom much is given, much is also expected, so I believe that the pressure he is going to face as the manager of Manchester united will be totally different from sporting Lisbon, so he just have to brace up for it when the time comes.