The Thunder have signed Hollis Thompson to a three-year deal, agent Seth Cohen tells Bobby Bancroft of 106.7 The Fan (Twitter link). Darnell Mayberry of the Oklahoman confirms the agreement, writing that Thompson will receive a partially-guaranteed contract worth the rookie minimum (about $473K) for 2012/13.
Thompson, a 6'8" junior out of Georgetown, went undrafted in June, but quickly found a spot at the back of the Thunder's roster. The 21-year-old becomes the 15th player under contract for next season for Oklahoma City, meaning players like Derek Fisher, Royal Ivey, and Nazr Mohammed almost certainly won't be back.