Just to clarify, Edy signed with our D-League team, Raptors 905, not the Raptors. The Raptors do not have any rights to him, any NBA team could offer Edy a contract. If the Raptors were to have Edy on their roster, they would have to cut someone and then offer him a contract.
With our current C rotation of Valanciunas, Bebe Nogueira, and Jakob Poeltl it's unlikely Edy will ever see the Raptors roster. But there's a good chance another NBA team may take a chance on him perhaps when Jan/Feb rolls around.