I love LvG but it's fairly clear Adnan's natural instincts have been coached out of him to a certain degree. He used to try to take players on all of the time - sometimes it came off sometimes it didn't. I get the impression LvG didn't like the element of risk because it's clear Adnan is reluctant to try at times now, so he ends up playing it safe a lot which is the opposite of what made him so exciting in his breakthrough season.
An Everton loan wouldn't be the worst thing in the world. He's still an exciting talent.
His natural instinct isn't to dribble. I believe what he did at youth level is what tips you off on his natural instincts. He only dribbled on occasion and it was never his focus. What was his natural instinct was to come to the ball with the freedom to go wherever he pleased and build the attacks. You can see that in his first preseason with United and a lot of his matches in his first season. Although under Moyes he did start to dribble a lot more and it did become his natural instinct under Moyes. I believe he was coached to make things happen and because his dribbling had a lot of success he started to rely on it.
Towards the 2nd half of Moyes' season he started to just stay on the wing and dribble. So he had a lot of quiet games, very lively games, and frustrating games. With LVG he does the same thing, but after his dribbling wasn't as successful as under Moyes, he started to be more conservative.
He needs to be allowed to come to the ball and get in the game is what I think. Now that I think about it, I don't think he needs to come to the ball, but he certainly needs freedom to dribble/pass his way to central areas allowing him to act more like a midfielder/10 than a winger.