Eric Musselman believes his experience working in professional basketball prepared him to navigate the transfer portal. The first-year USC coach got his start in the Continental Basketball Association (CBA) in 1989 and later worked in the NBA for 11 seasons, including as a head coach for both the Golden State Warriors and Sacramento Kings. Musselman also has worked on the international circuit with China, USA, Dominican Republic and Venezuela. He posted a 108-138 record in three seasons as an NBA coach, but learned valuable lessons about roster management at his various pro stops. Little did h…