Fuck off to him, a mediocre player because his of mind.
If you start to perform (very well) as wing back, into a role who can help to be regular starter, but ask to prefer a Steven Gerrard role, fuck off you and who instilled in your mind this mentality.
Chamberlain played some good games as CM, but he is a winger.
It's not a problem for me. Does he wants to leave? Show him the door, on the market there are many talented players to replace him: young players like Toljan or players with experience like Cuadrado.