Celtics forward Kevin Garnett could miss Wednesday night's game against the Suns with a sore right knee.

It's also possible that he could be out longer.

"If I do decide to sit [Garnett], I'm not sitting him for one game. I can tell you that," Celtics coach Doc Rivers told Comcast Sportsnet. "I told Kevin that."

Rivers added that if he did decide to rest Garnett he would probably do so until Jan. 6, when Boston faces Miami.

"It's early in the season," Rivers told Comcast. "We got tonight and we got two days, and then we got three days after that. To me, if you're going to rest guys, this is the perfect time to do it."