While we still do not have a definite answer as to how long he has been upset with the company, we do know now that CM Punk was already contemplating a departure from WWE as early as Royal Rumble 2014. He vented to Mick Foley at the time about not being happy within the company and having trouble dealing with injuries.
While many within WWE, including JBL, are pushing for him to be called up to the main roster soon, management currently does not have any plans of bringing Adrian Neville up from the developmental program just yet. The plan is to keep him in NXT until at least Wrestlemania.
"Adrian Neville. Not a doubt in my mind. I think he's just phenomenal. I don't know about his promo skills as I haven't seen them as much, but he's a guy who could go out there and perform on any card, anywhere in the world and be a help to that card. I would love to see him up in the WWE. He'll be there I just don't know the time frame."