Sure he wants to be a starter. But there's also got to be some hurt over the way he was unceremoniously dumped as the starter due to injury. It was embarrassing for him no doubt.
With that said, I'd absolutely be fine with the following plan:
1. Do not re-sign Quinn.
2. Release Cassel.
3. Sign Alex Smith as a FA (I would never give up picks for him.)
4. Draft Geno Smith.
Next year, let there be a true competition for the starting spot. Knowing that we've got our QBOTF on the roster and learning under Reid/Pederson would actually allow me to be ok with Alex Smith as a 1 year "bridge" type starter.