Unless you have an all world defense like the Ravens and Seahawks did, good luck with your rookie QB contract theory. Sounds great, but it has to be perfect timing. Would have worked like magic with Dak actually, but we didnt have anything close to a great defense during his first 4 years. Last time I checked we still dont have one.
Even the young Brady teams had Belli and his great defenses.
So this theory of yours really doesnt apply in the least whatsoever to the current Cowboys. Unless you are expecting Jerry to just start the entire team all over and wing it which would be ridiculous.