BOSTON, Jan. 11 (UPI) -- The Boston Celtics announced Thursday that guard Tony Allen had torn two ligaments in his left knee and would require season-ending surgery.
Boston Coach Doc Rivers said it might be six months before Allen is completely recovered.
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Allen tore both his ACL and MCL during a game Wednesday night against Indiana. The diagnosis was made Thursday at a local hospital.
He underwent surgery on his right knee two years ago.
Boston is already without Paul Pierce and Theo Ratliff, who are out long-term with injuries.
