Rasheed Wallace is contemplating coming out of retirement and returning to the NBA, according to YAHOO! Sports.Wallace contacted the Los Angeles Lakers a few weeks ago and expressed interest in joining the team.The four-time NBA All-Star retired after the 2009-10 season, but has told friends he’s interested in returning to the NBA.The 37-year-old averaged nine points and 4.1 rebounds in 79 games for the Boston Celtics in his final season.