Wasn't Monken the offensive coordinator with Cleveland a few years back? Now that was under Freddie Kitchens, which was a disaster, but Cleveland's offense wasn't all that despite having Nick Chubb, Jarvis Landry, Kareem Hunt, OBJ and Baker Mayfield in his rookie year. They were something like 22nd overall in scoring, but in fairness, Monken may not have had actual play-calling authority.
Still, I'm a little leery of these coaches from Power 5 schools. Hell, you could install almost any offensive system at a place like Georgia because you consistently have the benefit of superior talent. It's not hard to be creative when you essentially have 11 physical education majors going against 11 political science majors. Bigger, stronger and faster athletes are always going to prevail against slightly inferior ones. It doesn't work that way in the NFL.
Reminds me of some of these hot-shot college head coaches who flamed out quickly once they got the top job in the pros. How did the Nick Saban era work out in Miami? How about Bud Wilkinson? Lou Holtz? Then there's Steve Spurrier, Bobby Petrino, Butch Davis, Dennis Erickson, and the list goes on and on.