BOSTON — Celtics fans will have to wait a little longer until Robert Williams is back on the court.

The Boston big man was shut down for three weeks starting Dec. 16 after being diagnosed with a bone edema in his hip.

Head coach Brad Stevens provided an update on the forward Wednesday, saying he’s “in the middle a three-to-four-week plan of attack” and does not anticipate him back in the lineup until at least after the All-Star break. He’ll be evaluated again once this three-to-four week period has passed.

Williams was averaging 3.9 points, 4.6 rebounds and 1.1 blocks per game before his injury.

While it’s certainly discouraging that Williams will be out a bit longer than originally thought, it will be important for the C’s to be 100 percent healthy if they want to make a lengthy postseason run.

Boston welcomes the Detroit Pistons to TD Garden on Wednesday night, with tip set for 7 p.m. ET.

Thumbnail photo via Jeremy Brevard/USA TODAY Sports Images