The 49ers Communications stage provided the following rundown.
Davis (6-6, 309) originally entered the NFL after signing with the Seattle Seahawks as an undrafted free agent on May 2, 2015. He was waived by Seattle on August 31, 2015, and would go on to spend part of the 2016 season on the active roster and practice squad of the New York Jets and also the Miami Dolphins practice squad before signing a Reserve/Future contract with the Dolphins on January 10, 2017. Davis went on to appear in 94 games (72 starts) with the Dolphins (2017-21) and Pittsburgh Steelers (2022).
In 2022, Davis was traded to Pittsburgh from the Minnesota Vikings on August 30, 2022, and appeared in 14 games for the Steelers.
A 32-year-old native of Asotin, WA, Davis attended the University of Idaho for four years (2010-13) where he appeared in 39 games.
Brown (5-11, 196) originally signed a one-year deal with the team on September 22, 2023, and appeared in two games this season.
Sheffield (5-10, 212) originally signed to the team's practice squad on September 27, 2023. He appeared in three games and added three tackles as a standard elevation.
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