Homenetmen is vying with Al Riyadi and Champville to win the 'FLB League'.
Haddadi is without a team after parting company with his Chinese club Xinjiang Flying Tigers.
The 218-cm former NBA center has reportedly negotiated with the Lebanese club.
Haddadi has been also linked with Iranian club Petrochimi.
Homenetmen, meaning 'Armenian General Athletic Union', is a pan-Armenian diaspora organization devoted to sport and scouting. The motto of Homenetmen is "Rise and Raise" (Elevate Yourself and Elevate Others with You).