#1. KY, professional staff/organization, and the laser-like NBA focus.
#2. The opportunity to transform a program that realistically has all the signs of breaking through. As an athlete you want to make a difference. At Podunk U you are just a big fish in a small pond. Going to the other extreme, at 10-time National Champion U the expectations and pressure are through the roof. BYU represents a nice position, i.e. a place where he knows he will have ALL the support he needs to make a big splash.
#3. Big 12.
#4. Competitive NIL (I agree the highest bidder is not necessarily #1 issue for AJ; he's going to make $.)
#5. Marriott center (atmosphere/support).
#6. I suspect he also may be reading the Book of Mormon...