Mullin, 50, will advise owner and chairman Vivek Ranadive and general manager Pete D'Alessandro in basketball operations responsibilities, including player transactions and apprising front office and coaching personnel of the team's collegiate and professional scouting efforts.
Mullin, a five-time All-Star and two-time Olympian, was inducted into the Naismith Memorial Basketball Hall of Fame in 2011.
In his NBA playing career with the Golden State Warriors (1985-97 and 2000-01) and Indiana Pacers (1997-2000), Mullin averaged 18.2 points, 4.1 rebounds, 3.5 assists, 1.60 steals and 32.6 minutes in 986 games.
The Los Angeles Lakers have signed free agent guard Xavier Henry, the team.
Henry, the No. 12 pick in the 2010 draft out of Kansas, averaged 3.9 points, 1.8 rebounds and 0.3 assists in 12.5 minutes over 50 games last season for New Orleans.
He was drafted by the Memphis Grizzlies and was traded to New Orleans in January 2012.
The Charlotte Bobcats have signed free agent forward James Southerland.
Southerland, an undrafted rookie out of Syracuse, averaged 13.3 points, 5.2 rebounds and shot 39.8 percent from 3-point range his senior year.