The Houston Chronicle (Jonathan Feigen) reports: A group headed by former Rockets president and chief executive officer George Postolos has entered into negotiations to purchase the Charlotte Bobcats, a person with knowledge of the talks said Saturday. Postolos, who shepherded the Rockets through the arena referendum and move to the Toyota Center and helped the value of the franchise grow from $166 million to $422 million during his tenure, left the team in May 2006 after 7½ years to form The Postolos Group, a company that helps with the acquisition of sports franchises.