As former Portland Trail Blazer Brandon Roy works toward an NBA comeback, Yahoo Sports is reporting Tuesday that at least four teams -- Bulls, Mavericks, Pacers and Timberwolves -- are in the running.

Roy left the Blazers last season after the team used a new league amnesty clause to pay the balance of his contract and make him a free agent. He recently said he's been working out and hoping for a return. If the Blazers wanted to re-sign Roy, they could not do so until the 2014-15 season because of the amnesty rules.