Fields, 24, has appeared in five games and recorded two tackles in his two NFL seasons. He is the son of former Pro Bowl linebacker Mark Fields.
The 49ers Communications staff later announced the move and provided the following rundown.
Fields II (5-10, 180) originally entered the NFL after signing with the Kansas City Chiefs as an undrafted rookie free agent on May 6, 2019. After spending training camp with the Chiefs, he was traded to the Minnesota Vikings on August 31, 2019. He appeared in Minnesota's first game of the season prior to being waived on September 14, 2019. Fields was later signed to the Vikings practice squad on September 16, where he spent the remainder of the season.
In 2020, Fields spent time on the Vikings practice squad and saw action in two games for the team prior to being waived on December 16, 2020. He was claimed off waivers by the Texans the following day and saw action in two games for Houston. He was waived by the Texans on March 2, 2021.
A 24-year-old native of Cornelius, NC, Fields attended Clemson University for four years (2015-18) where he appeared in 48 games (six starts) and registered 45 tackles, 13 passes defensed, five tackles for loss, 1.0 sack and one interception.
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