San Francisco has already made a couple of additions to its secondary by signing safeties Richie Grant and Jason Pinnock.
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Thornhill (6-0, 205) entered the league as a second-round pick (No. 63 overall) by the Kansas City Chiefs out of Virginia in the 2019 NFL Draft. He spent his first four seasons in Kansas City, contributing to two Super Bowl championships, before joining the Browns in 2023.
Last season, Thornhill recorded 49 tackles (one for a loss), a quarterback hit, and three passes defensed in 11 starts with Cleveland, playing 57% of the defensive snaps, per Pro Football Reference.
Thornhill, 29, has appeared in 87 career games (74 starts) over six NFL seasons. He has totaled 337 tackles (six for a loss), seven quarterback hits, a sack, 24 passes defensed, eight interceptions, a touchdown, and a forced fumble during his time in the league.
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