Deion has been involved in coaching his sons in various sporting teams throughout their youth. I don't really see this any different than Penny coaching in middle school and high school. I'm not minimizing the efforts of a high school coach here, please don't take it as that. Just saying, going from high school to college is VASTLY different, especially with 85 scholarships.
When I said professional coaching, I mean that as a profession, not as NBA

.
I'd question the hell outta Deion as a DB coach, is he ready to be on the road recruiting and doing what an assistant does all hours of the day? Imagine he spends a significant amount of time prepping for his NFL gig, but that isn't year round like college football is. On top of that, we're talking about stepping into a P5 program that's effectively a dumpster fire.