So, a couple of NBA options that spring to mind:
Scott Skiles - Big Ten background as a player at Michigan State. He's probably done as an NBA head coach, at least for awhile. He's renowned as a guy who can develop and motivate young players. He's pitch-perfect as an NBA coach who you'd pick to be a college coach, though some of that has to do with him being a bit of a tyrant. You'd like him as the coach, but with his reputation as a tough guy to play for, would he be able to get players?
Monty Williams - Former New Orleans Pelicans Head Coach. He was absolutely beloved there and a great mentor to a young, talented team. They played together and they played hard. He doesn't have any college coaching experience but he definitely profiles as someone players would want to play for. He was chosen as an assistant on the US Olympic Team (Coach K, Boeheim, Thibs and Monty was the staff), so he's definitely someone Jerry Colangelo likes. Smart NBA people weren't in love with his coaching ability with the Hornets, but they've gotten worse with the same roster under Alvin Gentry who everyone loves, so who knows. Played at Notre Dame so there's a Midwest connection.
Lawrence Frank - Former Nets and Pistons head coach who is known as an X's and O's wizard. Was a student manager for Bobby Knight at Indiana and then an assistant to Kevin O'Neill at Marquette and Tennessee before getting into the pro game. Like Skiles, another coaches coach who got a reputation as a bit too much of a tyrant for the pro game. He's moved into the front office with the Clippers now, maybe that's the direction he wants his career to go.