If we don't sign Geno, some other team will sign him for much cheaper, than what he would of signed in Seattle for.
Geno is doing much better, than what many have expected. I'm pretty sure he was called a tank commander a year or two ago, now people want to sign over the farm to him. Give me a break!
I would say, let Geno walk, and if he wants to stay in Seattle, he will sign a Tom Brady type deal. Nice and cap friendly. No more than 15 million a year. If not, draft a QB or pick one up in free agency. Still have a capable back up, if he walks.