Am not a Manchester united fan, but am feeling really worried for them especially now that they are winning in their preseason game between westham and now Bournemouth because they will think that they are ok, that they no longer need anymore players to strengthen their team, but by comparing this Manchester united team to the rest of other top teams in the English premier league, you will understand what am trying to say, they are certainly going to struggle with the quality of players at the club.
This is just a preseason friendly and the hierarchy of Manchester united will be thinking that they are back to their best because they are winning, but if they were losing, they would be thinking of spending more and adding more quality to this team, I don't know if any other person is seeing it from the Same angle am coming from, but this team to me is not good enough to even make the top 8th next season.
I believe you are the only one who's having this thought that Manchester United will be feeling they are okay and they don't need to add more players to their squad because they defeated West Ham United and Bournemouth in their last 2 preseason matches. I don't know where you got your information that Ruben Amorim and Manchester United don't want to add more players to their squad because last time I checked, Ruben Amorim and Manchester United were trying to bring Šeško and Morten Hjulmand to Old Trafford.