Above is the image of Erik ten Hag being linked to his fellow Dutchman yet again, if it was so easy to join him the way the likes of Lisandro Martinez, De Ligt and Mazraoui joined, it'll should have happened long ago then. I don't see the possibility of him joining until he finally joins in between. Barcelona owe him lot of huge bucks, so it's best if they pay him completely, it's difficult for them to handle his current salaries and wages as they've been having financial challenges and woes. Iove this player but he is also another injury prone player.
If Erik Ten Hag has ANY credit left in Manchester United, he would love to get Frenkie De Jong, he made that public and wouldn't be a terrible transfer for United neither, dude is a good player and he is still young as well so they can use him well after Erik is fired. However, I do not think Erik has any credits left in the team, dude has been horrible for all season and he is on the verge of being fired right now, I believe the team wouldn't want to spend any money on a player the manager who is about to get fired would want.
Plus, they do not have to make a deal now, the transfer window is still a few months away, in theory they can sign a deal with Barcelona to get the player on transfer window, but they don't have to, they can do that when the time comes. Which means, they can wait until transfer window opens and see if Erik Ten Hag is still managing the club or not, maybe by that time he would be fired and someone else would replace him? We don't know.