Manchester United is doing a good thing because it has been seen since last season that the defense is their team's weakness and now they are trying to cover this weakness.
Manchester United is a team that continues to improve for the next season, that is a positive thing and the transfer market is still long, making it more likely that Manchester United will improve their team, if they continue to make changes to their squad, I am quite optimistic that Manchester United could be better next season.
Everyone will also see how Manchester United will perform at the start of next season until the end of next season. Because from what I see, it is not only the defense line that Manchester United needs to improve, but the midfield and attack line also need attention from Manchester United. Because a strong team must be able to excel in all areas in order to win the Premier League and the European League, because Manchester United will also play in the UEL next season.
When Manchester United are ready to have a total reshuffling of their players, that is when we will be looking at them lifting the Premier League trophy. Any other thing apart from that, the PL trophy will be far from them. The only thing they will look at is between the 5-7 position of the Premier League table. Well, let's see how the new signings they have made so far, will take them, whether they will be formidable or remain the way they are without much improvement in the team. Time will tell to that by next season, Ten Hag will gat to prove himself whether he worth keeping as Manchester United's coach or not.