After undergoing knee surgery in May, Kevin Garnett returned to the Boston Celtics training facility in Waltham on Monday,  Marc Spears of Yahoo! Sports reported. While the organization hopes he will be cleared to participate in full-court scrimmages for the start of training camp, they are proceeding with caution.

According to Spears, Garnett is currently limited to court drills but could be cleared for contract drills as early as a week before training camp begins. The Celtics main concern, though, is not Opening Night but rather the postseason.

“We’re looking for him to be there at the end of the season, not just the start of the season,” Ainge told Yahoo!. “We’re getting him ready for training camp and looking forward to him being healthy in the playoffs. He looks good. Really good.”

Garnett has not played since March 25 when he scored four points in 17 minutes during a loss to the Orlando Magic. The Celtics forward, who has not averaged less than 31 minutes per game since his rookie year, has not played over 30 minutes since February 12.

Ray Allen, Paul Pierce, and Rasheed Wallace have also been working out at the facility.

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In Celtics backcourt news, Ainge told Yahoo! he has not decided whether or not the Cs will offer Rajon Rondo a contract extension before the season. In the meantime, the Celtics are considering the addition of a third point guard. Free agents Tyronn Lue, Dan Dickau, and Mike Taylor worked out at the team’s training facility on Thursday.