The veteran defender hasn't attracted much interest as a free agent after appearing in nine games last season with the Detroit Lions. He landed on injured reserve late in the year with an arm injury.
Before signing with Detroit in 2019, Daniels spent the first seven campaigns of his career with the Green Bay Packers. He's accumulated 30 career sacks.
The 31-year-old could provide a stable presence in Cincinnati behind starters Geno Atkins and D.J. Reader. The Bengals were lacking depth at defensive tackle after they released Ryan Glasgow and Josh Tupou opted out of the 2020 season.