Chicago Bulls head coach Jim Boylen has growing concerns about his job security in the wake of Arturas Karnisovas' hiring as Executive VP of basketball operations with the team, according to a report from Joe Cowley of the Chicago Sun-Times.

Arturas Karnisovas, who previously served as general manager for the Denver Nuggets, will be replacing John Paxson in Chicago. Paxson, according to the Sun-Times, will move into an advisory role. The deal was finalized late last night.

As ESPN's Adrian Wojnarowski reports, Karnisovas will be tasked with hiring a new general manager and restructuring the Bulls' front office. At this point, it's not clear what this means for Boylen, but the winds of change are clearly blowing.

Via the Chicago Sun-Times:

A source told the Sun-Times Thursday morning that Boylen is already concerned that he will be ousted, and was hoping to sit down with his new bosses and discuss his year-and-a-half on the job.

Whether Boylen will get that opportunity is obviously yet to be decided, but even his biggest supporters — the Reinsdorfs — won’t be throwing a life preserver his way if Karnisovas wants to go in a different direction.

There have been reports throughout this season that the players on the Bulls' roster have not bought in to Boylen's system. If he is replaced, who might Karnisovas be interested in as the team's next head coach? Fansided recently suggested several candidates for the job, including David Adelman, Adrian Griffin and even Tom Thibodeau.

The Bulls have struggled to find a rhythm under Jim Boylen, as their 22-43 overall record can attest. Will Karnisovas keep him aboard, or does he truly seek an overhaul?