In as much as Erik Ten Hang didn't have a nice season, it doesn't make coaches like Xavi Hernandez and Thomas Tuchel better than him. If I am among Manchester United management, I cannot any of the above coaches above Erik Ten Hang.
Certainly, it seems Manchester United is not interested in dismissing their current coach. They might have concluded to give him one more season and make available players for him to try again this season. I personally believe that Erik would have done better if there were available players for him throughout the season. For the majority of the season he played without good defense, to the extent that Casemiro was occasionally made to play defense.
Why dismissed Erik Ten Hag when he has successfully won the FA Cup for Manchester United? We know how desperate Manchester United fans criticized the manager and lay down complaints about his incompetence but the present days, they even go as far to booed him during crucial games and Manchester derby. Erik Ten Hag have faced alot in the hands of the supporters, putting him under pressure but somehow he managed to survived and deliver the club when everyone thought he's definitely going to lose.
Erik Ten Hag is going nowhere and staying in Old Trafford, thereby retaining his managerial role as headcoach for the club, we should expects more angling sectors and improvements from the Red Devils because there will be presence of massive signings.