I know I've plugged Phil Perry's interview with J. T. O'Connell a couple of times on the board, but what Perry said crystallized something I've been thinking for a while: maybe the Pats are going the Van Noy route of getting cheap vet QBs rather than cheap rookies.
Paraphrasing his rationale: if you draft a rookie QB, his first year is likely to be terrible. His second year has a wide range of outcomes, with the median being "improving." Now it's the third year of a 4-year contract.
But if you take a castoff, they are likely to be better in the first year, and maybe you can fix/work with what's wrong with them so that they're a 5-10 year answer. If not, move on to the next castoff.
Someone will be available after this season. Probably several someones. My money's on Mayfield, but I can also see Ryan, Murray, Wilson, Tua, Drew Lock/Daniel Jones, Goff, Carr. Not to mention meh QBs like Bridgewater, Mariota, Winston, Garoppolo, etc.