The Sixers on Saturday signed former Georgia Tech forward Gani Lawal, the team announced.
In a related move, the Sixers released center Soloman Alabi. The team's preseason roster now stands at 20 players.
Lawal was under contract with VEF Riga of the Latvian League, but signed with the Sixers to compete for a roster spot.
The 6-foot-9, 234-pound forward was selected with the 46th pick by the Phoenix Suns at the 2010 NBA draft. He was on the Suns' roster during the 2010-11 season before being assigned to the Iowa Energy of the NBA Development League.
The 24-year-old averaged 14 points, eight rebounds and two blocks for Virtus Roma of the Italian League last season.
Prior to his professional career, Lawal averaged 11.8 points, 7.2 rebounds and 1.3 blocks per game in 99 career contests with Georgia Tech.
Lawal is also a member of Nigeria's senior national team and competed in the 2013 FIBA Africa Championship.