The Pistons might not officially be for sale, but already a hot rumor about the next owner has started buzzing. The person is David Katzman, a former business associate with Dan Gilbert at Livonia-based Quicken Loans/Rock Financial and Fathead, and a former vice chairman of the Cavaliers.

Katzman is the founder and managing partner of Camelot Venture Group, a Farmington Hills-based private investment firm that, according to its Web site, deals primarily in online direct-to-consumer companies, technology and financial services. He is listed as a member of several companies’ boards of directors. He attended Michigan State, earning a degree in accounting and finance, and Detroit College of Law.

In 2005, when Gilbert purchased the Cavs, Katzman acquired a 15% share for an estimated $50 million. He also took charge of the team’s business operations, and, according to the Camelot site, revenues more than doubled the past four years