Well that should be Amorim's main focus in his squad to fix weaknesses in the defense sector where in the two matches against Ipswich in the Premier League and Bodo/Glimt in the Europa League, Man Utd's defenders performed poorly, perhaps because they were not ready to run the 3 defender format. RB and LB were late to come down to help the defense when the opposing team relied on quick counterattacks. We'll see when we play against Everton later whether there are any real changes that are visible, if not, it seems that Amorim must bring in several players in the transfer market to support his project
For the position of Man United's attack line, it has improved after being trained by Amorim, but I still see weaknesses in the defense line because they concede goals so quickly after scoring goals. Amorim prefers three defenders placed below, but the ability of the players that Man United currently have is not qualified enough to withstand the opponent's attacks and they even lose spit when the opponent gives long balls that rely on running speed.
This must be an evaluation material because if they face a much stronger team, I am worried that they will concede more goals. The RB and LB positions will be quite important in helping the defense because if the opponent starts to attack by relying on counterattacks, It will be very difficult for Man United players to contain him.