Gar Forman was named General Manager of the Chicago Bulls on May 21, 2009. As General Manager, Forman supervises player personnel, coaching, scouting, training, and administration. During the summer of 2010, Forman led the charge to reload a Bulls squad after two consecutive .500 seasons and early playoff exits. Forman and the Bulls signed free agents Carlos Boozer (Utah), Kyle Korver (Utah), Ronnie Brewer (Utah), Ömer Aşık (Turkey), and Kurt Thomas (Milwaukee), while trading for C. J. Watson (Golden State). Those free agents were added to the Bulls' young core of players including Derrick Rose, Joakim Noah, Luol Deng, and Taj Gibson. On June 23, 2010, Forman also named Tom Thibodeau the 18th head coach of the Chicago Bulls. During his tenure with the Bulls (as General Manager, and previously as Director of Player Personnel), Forman oversaw the drafting of Taj Gibson (First Team All-Rookie 2010), Derrick Rose (NBA Rookie of the Year 2009 and 2011 MVP), Kirk Hinrich (NBA All-Defense Team 2007 ), and Ben Gordon (NBA Sixth Man of the Year 2005).
Forman was an assistant coach under Tim Floyd at Iowa State. Before then, he had a "scandalized" tenure as an assistant coach at New Mexico State in the early 1990s. Forman was accused of directing staff to guide "potential transfers through sham correspondence courses at the notorious Southeastern College of the Assemblies of God (SCAG)". However, he was eventually cleared by the NCAA.