The 7-foot-2, 34-year-old Haddadi averaged a double-double 14.6 points and 10.8 rebounds per game for Iran at the FIBA Basketball World Cup in China.
He has most recently played for Lebanese club Champville.
Haddadi started his playing career in Iranian club Shahin Ahvaz in 1999 and joined Memphis Grizzlies in 2008 and played in the NBA team for five years.