Amorim has acknowledged he faces his toughest test so far as United boss on Wednesday, when his side take on second-placed Arsenal. He said: "It is the best team we faced by far but the test is every game, the last game yesterday was really tough. Every team now is a test, without so much minutes to train, trying to manage the minutes of one game, some players have to be out of the pitch in 60 minutes, everything is a test. They are in a different point of their team. It is important to be brave, not to be pressing all the time higher. We have to understand the game, all the moments and have the ball, we want also to dominate some moments of the game."