BYU will pay up for him. Kalani gets paid, but he's also more worried about retaining assistants than raising his own salary and with Big12 money mostly negotiated their salaries I think I read somewhere.
Hill just had a heart attack ... changes your perspective on things. BYU is a great place to work with great AD support, the fans love him, and it's a family friendly environment. He's not leaving to take another DC position. Could he leave for a HC position? Maybe, but only for the right one — maybe.