I agree Manchester United needs to play better in Premier League. They have not won game in four matches which is worrying. They have big chance to win their next game at home against Southampton. This game is important to show how strong they are especially since Southampton is having tough season. Manchester United should try to win this game easily and show that they can play consistently against weaker teams. If they win it will make their fans happy.
In fact, Southampton are very weak and Manchester United must beat them, maybe Southampton will want to try to get out of the relegation zone, but they need to try very hard for this. And Manchester United, despite very difficult opponents, did not lose to Liverpool and Arsenal in the last two matches, maybe Amortm is starting to improve the game?
Manchester United have to hard struggle to beat Arsenal they have to playing until 120 minutes before won the match through an penalty shootout and Amorim feel the win result from Arsenal could being an bounce back point from Manchester United so he feel all of the players in the positive condition before the match against Southampton later but Amorim probably will do some rotation for Manchester United squad
Southampton indeed very weak this season they have to fighting to avoiding relegation zone which it's hard for them to out from this position but i think Manchester United shouldn't be underestimate them because usually the team from relegation zone will have strong fighting spirit and hard to beat so Manchester United should be focus to this match and one this for sure Amorim shouldn't do experimenting in this match