Funny enough, the Premier League is the only league that Manchester United will play in by next season. They won't play in the Europa League as they did last season because their Premier League spot for 2024/2025 is 15th position. They are going to focus on their Premier League matches because of that, without divided attention as they did last season, to focus more on the Europa League than they did in the Premier League, which made them appear in 15th place.
However, I expect Manchester United to give their best fight in the Premier League next season without any divided attention or excuses.
Their performance from last season has already caused them to concentrate only on the Premier League this season. With the position they finished in the Premier League, and missing the opportunity to win the Europa League, there is no need to compete in other leagues.
This season is for them to build up, revive their performance, and if they are able to perform well and settle into a better position this season, then they will qualify to participate in other leagues. Indeed, Manchester United really needs to put things in order to achieve better results.