From this article:
That Gillispie is allegedly mistreating players should come as no surprise to those within the basketball community given his reputation earned during stints at Texas A&M and Kentucky, the latter of which being a place where he was fired after just two seasons of not enough on-the-court success to make the administration ignore his off-the-court problems. He’s tough and hard and sometimes irrational. It wears on people. And now it just might cost Gillispie his job before his second season at Texas Tech even gets underway.