Source: Popeye Jones to join Avery's staff

The Dallas Mavericks will lose at least one assistant coach this offseason, but Popeye Jones wasn't the one they expected to say good-bye to first.

While Dwane Casey continues to wait for a call to become a head coach, Popeye, the Mavs' player development coach the past four seasons, will join Avery Johnson's staff with the New Jersey Nets, according to a league source.

Jones, who had two stints with the Mavs during his 11-year NBA career, was with the franchise for four seasons as a coach.