Losman's a better QB than Edwards. Last season he was showing signs of maturing into a good, possibly top 10 QB, before regressing this year and being replaced by Trent Edwards after being hurt. Frankly, I think the Bills caused this slightly by rattling Losman's confidence by drafting Edwards, and then playing the inferior QB even when it was clearly his fault for losing games for his team (Giants, Week 16 being the best example... the Bills win that game if Losman is the QB, he wouldn't have thrown 2 pick sixes).
Losman deserves a chance elsewhere. The Bills should give it to him.