Dusan Kecman is reportedly suing Serbian champions Partizan for the club for non-payment when the forward was at the club.
It is reported that Kecman is owed between €15-20,000, which was due to be paid to the forward in 2012 by Partizan, who are already in deep financial trouble.
Kecman spent seven years with Partizan, winning seven Serbian titles, four ABA titles and four Korac Cups before retiring in 2013.
The 36-year-old also had spells in Greece, Turkey, Belgium and Ukraine. He ended his career in France for AS Monaco in the French third division.