The 49ers later announced that the deal is for one year. The team made room on the roster by releasing cornerback Briean Boddy-Calhoun.
Jefferson has not played since Week 5 of the 2019 season when he suffered a torn ACL. The Ravens released him on February 14, 2020. The defender underwent a physical while visiting with the 49ers earlier this offseason.
The Arizona Cardinals signed Jefferson as an undrafted free agent out of Oklahoma in 2013. He registered 21 tackles and three passes defensed through his five games in 2019, per Pro Football Reference.
Jefferson, 29, has recorded 451 tackles, 8.5 sacks, 22 passes defensed, four interceptions, a touchdown, and eight forced fumbles through his seven NFL seasons.
Boddy-Calhoun appeared in one game with the 49ers in 2020 and spent time on the team's practice squad before being waived on December 14, 2020. He re-signed with the team on March 17.
Related News
More San Francisco 49ers News
-
Only one 49ers player leads position group in Pro Bowl voting
The NFL Communications staff released the latest voting results for the 2026 Pro Bowl Games, with the AFC and NFC rosters set to be unveiled Tuesday morning. Among the San Francisco 49ers, only one player currently leads his position group: fullback Kyle Juszczyk. Selections... -
49ers' Kyle Shanahan surges in Coach of the Year race after late-season success
San Francisco 49ers head coach Kyle Shanahan continues to draw praise after Sunday night's win over the Chicago Bears, a victory that set up a high-stakes Week 18 matchup against the Seattle Seahawks. On the line: the NFC West title, the NFC's No. 1 seed, and home-field... -
49ers open as slight favorites in Week 18 showdown with Seahawks
There's plenty at stake Saturday night when the San Francisco 49ers host the Seattle Seahawks at Levi's Stadium. The winner not only claims the NFC West crown but also secures the No. 1 seed in the NFC playoffs and home-field advantage. For the 49ers, that top seed would be... -
49ers vs. Seahawks injury report: 4 players miss Tuesday's practice
The San Francisco 49ers are preparing for their Week 18 contest against the Seattle Seahawks on Saturday at Levi's Stadium in Santa Clara, California. Running back Christian McCaffrey and left tackle Trent Williams typically receive rest days during the first practice of the...