Pook played 38 league games last season - an overwhelming majority of those were starts too, so it's wrong to say that Pook wasn't a first team member. Yes, Evans was injured but Pook was a mainstay.
I'm guessing as he's approaching his 3rd season as a first team player he wants what he (not the fans) feels he deserves - he's probably on a lower wage than his teammates too.
However, all this business can be resolved by simply releasing him 
Nail. Head. Smackamundo!
My opinion, FWIW. I don't think he's good enough for League 1. Might be useful as a squad player, but we seem to have plenty of cover in CM, especially if we sign Steve Adams. I'd prefer to see his wages freed up to sign a striker.
As an aside, he's brilliant for my Swindon reserve side on FM2007. That's about his level...