Besides the most interesting part of this, where they end up positioned in this draft, the next part is how do they handle the timing of Prescott.
Do they A) sign him to a long term deal prior to the draft sending the signal that they're not going QB or B) start the negotiations and let those run through the draft leaving the idea open that they could go QB or C) tag him and his reaction to that could be the tell about whether he might dig in against that. Since the FA began with this tag, no player has come close to his career ending during that season and that ankle will not be 100% against the wrong hit just the right way.
I don't know if the Joneses can keep their cards close to the vest because they like to talk so much but if they end up in the top 3 or 4 spots, playing that right could get a hell of a lot better haul in a trade. This could be one of those QB drafts where they dominate 5 of the top 6 picks. Got a lot of young guns looking like they might have been worth where they were taken and quite a few teams in the hunt for their next QB.
If I was the GM as truly as sold on Prescott as they seem to be, I would make the deal but not sign the paperwork and not release any information until after the draft. After all, that would benefit Prescott as much as anyone. He's probably got his eye on that OR OT, Sewell, who has already declared and is likely to be the top non QB taken in this draft. If the Cowboys could swing that and maybe a couple of extra picks, that's a win in my book. Even better would be Sewell and a D starter in trade.
However, keeping a secret in the NFL seems to be near impossible.