The Celtics aren't expecting Kendrick Perkins to return until February or March, but he has set a goal of January for his return to the court.
Perkins tore his right ACL in the first quarter of Game 6 of this year's NBA Finals against the Lakers.
"I've been doing a lot of rehabbing, make sure I get my work in every day," he said. "Make sure I keep my weight down, just taking it one day at a time.
"The swelling in my leg went down so everything's coming around pretty quickly. Right now I can't work out like I want to, I can't hoop. But everything else is doing great."
Perkins added that he doesn't feel threatened by the additions of Shaquille O'Neal and Jermaine O'Neal this summer.
"I don't see it threatening me at all," he said. "I got to work hard. I know I got to fight to get back to where I was. It's no problem with me. Hard work is not a problem."