Billy Donovan, amid the Bulls' pivot to a rebuild, feels as though the team will be struggling on the defensive end of the floor.

One of those friends was Bulls head coach Billy Donovan. Donovan won back-to-back titles as the coach of the Florida Gators in 2006 and 2007, so he understands what Hurley is going through at the present moment.

Injury-plagued Bulls point guard Lonzo Ball continues to play five-on-five basketball while eyeing a return to game action, but uncertainty still persists with the start of training camp looming next week.