High Quality Content by WIKIPEDIA articles! The Seattle SuperSonics relocation to Oklahoma City was a successful effort by the ownership group of the Seattle SuperSonics to move the team to Oklahoma City. The team began play as the Oklahoma City Thunder in the 2008-2009 basketball season after becoming the third NBA franchise to relocate in the past decade. After failed efforts to persuade Washington government officials to provide funding to update KeyArena, the SuperSonics' ownership group, led by Howard Schultz, sold the team to Professional Basketball LLC (PBC), an investment group headed by Oklahoma City businessman Clayton Bennett. After failing to persuade local governments to fund a $500 million arena complex, Bennett's group notified the NBA that it intended to move the team to Oklahoma City and requested arbitration with the City of Seattle to be released from its lease with KeyArena. When the request was rejected by a judge, Seattle sued Bennett's group to enforce the lease that required the team to play in KeyArena through 2010. On July 2, 2008, a settlement was reached that allowed the team to move under certain conditions.