SANTA CLARA -- Wide receiver Mario Manningham, whose tenure with the 49ers got derailed by a brutal knee injury, agreed Monday on a one-year contract with his original team, the New York Giants.
Manningham leaves a 49ers receiving corps that includes incumbent starters Anquan Boldin and Michael Crabtree, along with a string of unaccomplished reserves: Quinton Patton, Jon Baldwin, Chuck Jacobs, Brandon Carswell, David Reid, Demarco Sampson and Devon Wylie.
Manningham is the fourth free agent to leave the 49ers in the past week, following safety Donte Whitner (Cleveland Browns), cornerback Tarell Brown (Raiders) and running back Anthony Dixon (Buffalo Bills).
Center Jonathan Goodwin remains on the market, and although he has had multiple contacts with the 49ers, there hasn't been any contract offer. Other free agents include wide receiver Kassim Osgood, cornerbacks Carlos Rogers and Perrish Cox and quarterback Colt McCoy.
After making a sideline catch to spark the 2011 New York Giants' Super Bowl win, Manningham signed a two-year deal with the 49ers and was their second-leading receiver in the 2012 regular season (42 receptions, 449 yards, one touchdown). However, Manningham's 2012 season -- and his career -- came to a serious halt on Dec. 23, 2012, when his left knee was injured on a questionable tackle by Seattle Seahawks linebacker LeRoy Hill. Manningham tore the anterior and posterior cruciate ligaments.
Manningham made his 2013 debut Nov. 10 in a loss to Carolina, and his comeback was cut short after six games (nine catches, 85 yards) when his knee became aggravated. He went on injured reserve Dec. 27 and missed his second straight postseason.
Free agent wideouts who reportedly drew the 49ers' interest in the past week were Julian Edelman (re-signed with the New England Patriots), Emmanuel Sanders (signed with the Denver Broncos and Hakeem Nicks (signed with the Indianapolis Colts).
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