I really want the Bills to draft a QB, but they would have to give up too much in order to get Rosen, and I don't think the Bills can afford to do such a thing.
Even if the Bills make some quality signings in free agency, they are going to need to address other areas in the draft.
With Lamar Jackson returning to Louisville and Sam Darnold leaning towards returning to USC, the overall QB class will be thinner with top prospects. The Bills may not have a shot at QB's like Allen, Mayfield, or Rudolph.
The second tier projects may be their only shot. I still like Luke Falk, and think he can be groomed to be a starter in this league.
Just have to wait and see.