Brandon Roy will attempt a comeback to the NBA and his top suitors are the Bulls, Mavericks, Pacers and Wolves, according to sources.

Roy's recovery from chronic knee problems has been recently spurred by undergoing the platelet rich plasma therapy procedure, sources said.

The Golden State Warriors have also expressed strong interest with Roy. The Warriors' general manager, Bob Myers, was Roy's agent with the Wasserman Media Group.

Several teams could be willing to use their full-mid level exception for Roy, sources said.

Indiana could have an advantage in pursuing Roy due to the presence of Kevin Pritchard, who was general manager of the Blazers when he was drafted.