Still bothered by pain in his left knee one year after surgery, 76ers forward Monty Williams may have played in his last NBA game.

Team president and general manager Billy King confirmed yesterday that Williams is thinking about retirement.

Williams, 32, a nine-year NBA veteran, was excused from Thursday night's final preseason game against New Jersey at the Wachovia Center. He did not show up yesterday during practice at Philadelphia College of Osteopathic Medicine.