New York Knicks guard Ronnie Brewer is out six weeks after having knee surgery on his left meniscus, the New York Daily News reported Friday. Brewer also made an announcement via Twitter. "If y'all haven't already heard I had successful meniscus surgery," he wrote. "Started rehab this morning. Minor setback for a major comeback." The Knicks told the Daily News that Brewer tore the meniscus in the last two weeks and will rehab for six weeks. That means Brewer would be ready to return in mid-October. The Knicks begin the season Nov. 1 at the Brooklyn Nets. Brewer, going into his seventh season, is looking to fill the void left by Iman Shumpert, who tore an ACL in the playoffs. Shumpert is not expected back until at least sometime in December. Brewer is noted for his defense. Last season, he averaged 6.9 points on 42.7 percent shooting.