IMO Hawk is too slow to play the OLB position, then again I think he is too slow to play inside. If we can get a 3rd or 4th round pick for him in a trade we should trade him this year, as next year he is due a 10 million contract, forcing the Packers to cut him.
If Hawk is on the team this year and Chillar comes in on passing downs, we will pay 5 million and be giving up a 3rd or 4th round pick for a role player with no future. IMO Hawk does not fit the 3-4 and the Pack needs to move due to lack of future with Hawk.
I do agree with you that Bishop/Chillar will be as good as Hawk, if not better.
The opposite side of Mathews should be a competition between Brad Jones/rookie/free agent or trade. The Kampman experiment failed and his contract (lack of) seals the deal.
I know a lot of people feel we need another OLB, which is true, Jones is a "?" and we need depth, but we need a dynamic inside LB to complement Barnett, if it can not be addressed this year, Chillar/Bishop will do fine.