Not sure how accurate this is, but it seems Manny Diaz at Duke may be making the same amount as Darian Mensah is-seemingly $4M a year, though I’m struggling to find a source beyond Wikipedia for Diaz's salary. Admittedly skeptical that he’s making that little. And apparently Joey Maguire is making $7M, can certainly see Texas Tech paying a QB more than that in the next few years, with how much they’re already spending for other positions.
Though, I doubt this is going to be a very common occurrence. Most non SEC, B1G, and Texas Tech programs cannot afford to sell the farm for a QB, and most of the programs that can will also break the bank for a coach if they have to.