The 6-9 forward was waived at the end of last month by the New Orleans Pelicans after breaking his thumb in his debut following a trade from the Sacramento Kings.
Casspi, the first Israeli to play in the National Basketball Association, was part of a blockbuster five-player deal that had the Pelicans acquiring All-Star center DeMarcus Cousins.
Bruce Levenson, who owns a controlling interest in the NBA’s Atlanta Hawks, is selling his stake in the team after self-reporting a racially insensitive email he sent two years ago.