It appears Kemba Walker's return is near

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Kemba Walker could return to the Celtics as early as Sunday afternoon against the Knicks.

The veteran point guard was upgraded to "questionable" on Boston's injury report Saturday, marking the first time this season he has been listed as anything other than "out."

Walker was cleared to return to practice on Jan. 8. He received a stem cell injection in his troublesome left knee in October and was put on a 12-week strengthening program at the time.

Walker said this week that he's feeling "really good" and better than he did before beginning play in the bubble over the summer.

Elsewhere on the Celtics' injury report, Jayson Tatum, Robert Williams and Carsen Edwards all remain out due to health and safety protocols, as does Romeo Langford (right wrist). Daniel Theis (right middle finger sprain) and Tacko Fall (left ankle sprain) are questionable.