According to sources, Leonard is currently engaged in on-court work but hasn't yet advanced far enough to receive clearance to return.
The club is reluctant to offer a specific timeline for Leonard's return because there's a level of unpredictability involved with rehabilitation from quadriceps tendinopathy, a source said.
For the better part of the season, Popovich has replied "sooner rather than later" when questioned about Leonard's potential return.
"I keep saying sooner rather than later," Popovich said jokingly. "It's kind of like being a politician. It's all baloney, doesn't mean anything."