David Stern believes the NBA should remove marijuana from their list of banned substances.

"I'm now at the point where, personally, I think [marijuana] probably should be removed from the ban list," Stern said. "I think there is universal agreement that marijuana for medical purposes should be completely legal."

Stern made the comments in an interview with Al Harrington, who has become a cannabis entrepreneur since retiring from the NBA.

Stern was commissioner of the NBA during a stretch with widespread cocaine use.

"It's a completely different perception," Stern added. "I think we have to change the Collective Bargaining Agreement and let you do what is legal in your state. If marijuana is now in the process of being legalized, I think you should be allowed to do what's legal in your state."