He is not a terrible QB. His numbers inside and outside the pocket last year were better than some starting QBs and better than almost all backup candidates.

And he was functioning in his first year of Chip Kelly's non-NFL offense with junk around him. He was Captain Checkdown last year though and that did help with the 16/4 TD to INT ratio.

Essentially, CK is proof that winning is not the only thing, as teams would rather be worse at backup (or starter) than sign him.

Its also coaches who would rather groom Graham Harrell to run their offense from the pocket that do something with better results. If you are going to get fired, get fired running your offense.