The Bears on Friday signed defensive lineman Trevon Coley and cornerback Davontae Harris and waived defensive tackle Auzoyah Alufohai and safety Jon Alexander.
Coley, 28, has appeared in 44 NFL games with 31 starts over four seasons with the Browns (2017-18), Colts (2019) and Cardinals (2020), registering 100 tackles, 14 tackles-for-loss and 3.5 sacks.
The 6-1, 310-pounder entered the NFL in 2016 with the Ravens as an undrafted free agent from Florida Atlantic. He was waived during final cuts and later spent a couple weeks of his rookie season on Washington's practice squad.
Coley played in 31 of a possible 32 games with 29 starts the next two seasons with the Browns. He appeared in seven contests, all as a reserve, with the Colts in 2019 on a defense that was coordinated by Bears coach Matt Eberflus.
Coley signed with the Titans last year but spent the entire season on injured reserve.
Harris, 27, has played in 36 NFL games with nine starts over four seasons with the Bengals (2018), Broncos (2019-20), Ravens (2020), 49ers (2021) and Chargers (2021). He has recorded 59 tackles and four pass breakups.
The 5-11, 200-pounder was selected by the Bengals in the fifth round of the 2018 draft out of Illinois State.
Alufohai signed with the Bears Sept. 1, 2021, and spent parts of last season on the practice squad. Alexander joined the team in May as an undrafted free agent from Charlotte.