BOSTON — Thursday marks 10 months since Knicks star Kristaps Porzingis tore his ACL in a game versus Milwaukee, and Knicks coach David Fizdale gave no indication Wednesday the Latvian’s return to practice is imminent.

Last season, then-Bucks forward Jabari Parker, returning from his second ACL injury, practiced for one month before suiting up. If that holds true for Porzingis, there’ll be no Merry Kristaps when the Knicks host the Bucks on Dec. 25.

Asked if he has an idea when Porzingis will be back, Fizdale said flatly, “No.’’

In a late June radio appearance, Knicks president Steve Mills didn’t discount Porzingis returning at the nine-month mark. Mills was using a timetable from the date of surgery — which was Feb. 13.

Porzingis has not traveled with the team this season but attends most practices and home games.

“He’s been leading, in film, rooting his guys on in the huddle,’’ Fizdale said. “It’s still tough for him — not easy watching everyone run around and have fun and still be that engaged. He’s been great.”

Porzingis last spoke to Knicks media in late September — the first day of training camp. But three weeks ago, Porzingis said in a magazine interview that he felt his rehab was ending, saying, “it’s getting closer — I can taste it.’’

In late September, Porzingis advised caution in saying a 7-foot-3 pro athlete has never sustained such an injury. But he said he would be back when he passes his strength tests. Sources, however, caution that Porzingis’ return is based on his mental health, too — on when he feels comfortable playing on the knee.