The Bills lost a cornerback when E.J. Gaines opted out of playing the 2020 season and they added another one to the roster on Sunday.
King had 38 tackles while appearing in 29 games for the Seahawks over the last two seasons. He opened his career as a 2015 seventh-round pick in Atlanta and played in five games during his time with the Falcons.
Scott had four tackles in six games with the Bengals in 2018. He spent last season on injured reserve after hurting his foot.