The story said that Roy and his agent plan to meet with representatives from the four teams this coming week.
The source who confirmed the Mavs are on Roy's short list could not confirm a scheduled meeting. There are reports that Dallas met with Roy on Saturday.
Mavs fans won't soon forget Roy's incredible Game 4 performance in the 2011 first-round playoff series that rallied the Portland Trail Blazers from a 24-point deficit late in the third quarter to win the game. The Mavs won the next two games to finish off the series and went on to win the championship, pointing to that game as a key moment in their run.
Roy, 27, who has been plagued by knee injuries, decided to retire after the 2011-12 season. But, he has undergone the platelet-rich plasma therapy that helped Kobe Bryant and wants to make a comeback.