If I were building a club and Brooks was available, I wouldn't offer him anymore than 250k-300k a year. He'd be a good back-up half who can perhaps be a solid no.14. That's about the going rate for that kind of player.
If Newcastle or any team wants to chip in more than 300k of his contract, we'd be stupid to keep him. End of the day, being stubborn over his release is cutting off our nose to spite our face. Sometimes taking a loss can still be a win in the grand scheme of things.
Re: all the people blaming the pack ... we've had good players in our pack. We've had halves play great - Doueihi outperformed him significantly last year, Hastings has been leagues better this year. Our pack is god awful now obviously, but in prior years the issue has been Brooks being unable to steer them around the park (not entirely his fault since he's clearly not a halfback).
A pack is only as good as the organiser they have and structure around them. Brooks being unable to organise sets, find the turf on his kicks and put on points/generate repeat sets when we're in attacking position has always been the bigger problem. Not being able to capitalise on opportunities is demoralising - how many times can a forward keep putting their body on the line only for Brooks to throw a pass to their shins or a metre behind them?