There are always some pretty good vet QBs that are available every year. If Fitz doesn't cut it, and I think he will do fine, we can pick up another vet like a carson palmer, drew brees, mike vick, lots of good qbs change teams for a lot of reasons. We can find a quality one especially if we have a team that only needs a QB to get there.
At the same time we draft a young guy and let him learn.