La Liga and Premier League are different and will De Jong want to take risk to join Premier League? I know he is smart enough to smell the risk when he looks at his ex-teammate, Donny Van de Beek have been struggling in Manchester United through three coaches, Solskjaer, Carrick and Ragnick. No good position, no future for Donny in Old Trafford. I guess the same scenario can happen with De Jong in Old Trafford if he plays here.
I think it is not easy for Frankie de Jong to adapt if he agrees to move to Manchester United, the wide difference between La Liga and the Premier League is an indication that Frankie de Jong needs to adapt how he can perform with a pretty good performance with Manchester United next season. La Liga game does not require players to always be actively moving, in contrast to the Premier League for almost 90 minutes, players are required to be in a position as fast as possible when defending and counter-attacking. Takes a strong physique and I see Frankie de Jong doesn't seem to be able to fully adapt to the rigors of the Premier League game.
There are differences in the different leagues but the differences are not much to counter the fact that football is universal. What differs is the coaches approach.
That is the reason a caoch from German league can excel in England and vice versa.
De Jong can adapt quickly in any good team, I mean a good team. The case with Van der beek is that he met a disorganised team and he was most times played out of his position.
Do Jong is smart and energetic and with the cooperative team in-place, he can perform well.