I'm on the fence about Mook.
He's a good CB, not a #1 cover guy but he's certainly a starter anywhere in the league and he's a home grown player. I wouldnt have any problem with him remaining on the team because he helps the team win.
However I feel like he doesnt have "that" type of production or impact on the game to warrant this team having to spend 10 million plus a year on the guy who there are MASSIVE holes that need to be filled with that type of money elsewhere (Oline, LBs, WRs, Dline)
Especially when you consider that you can probably get his type of production cheaper in FA, or atleast someone who will last a full season.