SANTA CLARA, Calif. — The San Francisco 49ers have re-signed linebacker Matt Wilhelm to a one-year contract, keeping him from becoming an unrestricted free agent Thursday night.

Wilhelm joined the Niners, coming off an 8-8 season, on Oct. 19 after Jeff Ulbrich was placed on season-ending injured reserve because of a concussion.
The 29-year-old Wilhelm was in training camp with the Philadelphia Eagles last year before being released. He spent the 2003-08 seasons with San Diego, which let him go a week before their first full-squad practice of training camp in 2009.
Wilhelm has 258 tackles, six interceptions and two sacks while playing in 82 games with 22 starts during his seven-year NFL career. He was a fourth-round draft pick by the Chargers in 2003.