The Washington Post (Ivan Carter) reports: Gilbert Arenas confirmed that he underwent a surgical procedure this morning that “cleaned out some debris” in his left knee. Arenas, who has undergone two surgeries to repair the left knee in the last two seasons, has been limited during the rehab process all summer and said he has planned all along on not participating in training camp or the preseason. Arenas, who signed a six-year, $111 million contract this summer, said he plans on returning to game action sometime in early December which would mean that he’d miss at least the season’s first month… “I just had some floating debris in there that was slowing me down,” said Arenas, who seemed to be in good spirits. “It was irritating the knee so we decided to go in there and clean it out. This should actually allow me to come back faster.”

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