New Orleans Saints linebacker Victor Butler injured his knee during OTA practice last Tuesday when he collided with Mark Ingram. A second opinion confirmed what the Saints were fearing, Butler requires surgery to repair his torn anterior cruciate ligament (ACL), according to Larry Holder of NOLA.com.

Butler will undergo surgery, which is expected to sideline him for the 2013 season, on Tuesday. As of yet, the Saints haven’t determined if they are going to place Butler on injured reserve. More should be known regarding the injury and resulting return timeframe after the surgery is completed.

New Orleans and others around the NFL viewed Butler as a promising outside linebacker, and he was running with the club’s first-team defense oppositing Will Smith in the new 3-4 scheme. He signed a two-year deal with the Saints earlier this offseason after spending time with the Dallas Cowboys.