There arent a lot of good guys out there this year. Either Hoyer or Bradford would be near the top of the list with hopefully the idea that they are a stop gap.
Matt Moore from Miami is a FA as well and probably could hold things down for a little bit.
Outside of that who knows who could shake free. There are 3 guys is Washington and at least one has to be available. The Sanchez/Foles situation is something to watch as well. Ive always been a Sanchez supporter but I really doubt he comes back but if he gets a new deal then Foles might be an option.
What happens in Buffalo with Orton? What about Houston with Fitzpatrick, Mallet and Yates?
None of these guys are awesome but if we have a rookie on the bench then a vet with experience will be needed. With that said Geno isnt going anywhere. Maybe he is the guy to hold it down until the rookie is ready. Scary though I know but at least we would have hope behind him but the fans would probably pressure to play the rookie by week 4.