Just spitballing here, but let’s say he has a wink-nod deal with the Cowboys to sign with a UFL each summer for 3 years, and sign back with the Cowboys for the season. With a 10 game UFL season (2 more games for the post season), and a 5 game NFL preseason (Dak barely plays in the preseason), we are talking about 45-51 games of experience over 3 seasons. After that, the kid will be 27 and ready to embark on a 10-12 year starting QB career. Is that enough of a Time Machine for you?
Throw in a QB guru like Doug Pederson who’s super active with him the whole time. You are unlikely to have a top 3 pick in that time period and it doesn’t stop you from drafting a great prospect who falls in your lap.
With the reliance on the league on QBs, some outside the box thinking could be beneficial. Of course humanity is a level 2 chaos system so events along the way, like him having a good showing in either season, would alter the course of things.