They considered boycotting a practice after back-to-back games and were insulted when he subbed out an entire lineup at once.
The Bulls have gone 5-13 under Boylen since Hoiberg was sacked December 3rd.
Boylen, who was elevated from associate head coach on December 3 following the firing of Fred Hoiberg, negotiated the deal himself with the organization, sources said.
Boylen had been the team's associate head coach until December 3, when he was elevated to the top spot after Fred Hoiberg was sacked.
A gesture that the front office appreciated since they would be paying the remainder of Hoiberg's $5 million through 2018-19, as well as another $5 million they owed Hoiberg for next season.
The Bulls now sit tied with the New York Knicks for the second-worst record in the East and third-worst overall. The Bulls, having lost six straight before Saturday night's 110-102 loss at Utah and fresh off a 37-point blowout at Golden State, were perceived to be rewarding the captain of a steadily sinking ship.