Kobe Bryant -- One More Ride ... Done with Lakers After Next Season

Kobe Bryant's on his last leg -- the upcoming season will be his last in the purple and gold ... according to Lakers GM Mitch Kupchak.

Kupchak was on SiriusXM NBA radio when he dropped the mild bombshell -- saying that Kobe "has indicated to me that this is it" ... referring to the 2015-16 NBA season. Everyone knew this was the last year of Kobe's Lakers contract, but some fans held out hope he could keep it going for another season.

But Kupchak said, "There have been no discussions about anything going forward. I don't think there will be. He hasn't indicated that he wants to continue to play."

It's unclear if he meant retiring from the Lakers -- or from the NBA altogether -- but the GM isn't guaranteeing Kobe will hang 'em up just yet. Kupchak admitted that in a year this could all change.