Saliba is one of the key players in Arsenal, so this will be difficult to let him go at his high performance.
Arteta was already prepared for the worst to let him go if Real Madrid pressed on, but they did not, and that is lucky for Arsenal because it now gives them more options of quality defenders to use in important games. And Man United is quite unlucky again this time. Even Leny Yoro, one of the newly brought in players who will be relied on to make the club quite stronger, has been confirmed that he has a foot injury. And unfortunately, he has to get treatment for about 3 months, this makes him absent and cannot start his career at Man United in the next 3 months.
Lucky For Manchester United they still have the time to get another player I could feel that row as it transfers and is still open because even though the attack is good they also have to have a solid defense to avoid conceding goals when their attack scores. This was one problem that Chelsea and Manchester United faced last season. Ten Hag has to prove himself as he has been given another chance. 
They aren't achieving anything in that way. First you fix their issues there and then focus on your scoring abilities more. Slow and steady, they can go back to becoming a title challenger club after all these years. It is quite possible. 
