If this was an actual thing every team would be super active doing it, but being that there is a dearth of Even above average QBs... Sure every once in a while a team scores an extra QB that has the ability to be a starter, and keeps or trades him, but really, it’s rare as hens teeth ? ??. I’m not saying not to keep your eye open for that opportunity and capitalize on it, but again how many unclaimed QBs have that potential?