Wojnarowski reports that new Bulls coach Fred Hoiberg had targeted Boyle to coordinate his defensive coverages and help with his jump from college to the NBA.
Boylen was the head coach at Utah from 2007 to 2011 before jumping to the NBA as an Indiana Pacers assistant before becoming a Spurs assistant on Gregg Popovich's staff.
Chicago hired Hoiberg from Iowa State on June 1 after firing Tom Thibodeau.
According to Wojnarowski, Popovich wanted to keep Boylen on his staff but understood the opportunity his assistant had with the Bulls.
The Bulls finished 50–32 this season and made the playoffs, losing to the Cleveland Cavaliers in the second round.
- Molly Geary