At some point it almost felt like ten hag had a thing on de gea's career because after he refused him been part of the Manchester United team, his career did had a set back that almost broke him but somehow he found his way out and now he's got a team, for the first time in his career he was a free agent for the longest so it's going to be like ten hag should have similar experience a d see what exactly it does feels like at this time but I don't think de gea will be of that stance of been happy than ten hag lost his job.
Intense pressure made De Gea not play well at Manchester United,
Ten Hag implemented his rhetoric to all players which made conditions not so ineffective for players like De Gea. So If the coach was wrong implement his strategy that made the player play badly and was discarded.
In Fiorentina, De Gea played well and looked enjoy when got direction from Palladino.
So I think it depends on who the coach is. Any great player out there will not develop yet or tend to be bad if the coach implements his ego.
We also look at how Moise Kean played, because, at Juventus, he played badly also, he never scored a goal in the previous session, but in Fiorentina, he became a monster and became 2nd the top scorer also after Mateo Retegui in Serie A.