The Chicago Bears made Mills (6-5, 316) a fifth-round selection (No. 163 overall) out of Louisiana Tech in 2013.
Mills, 31, has 100 game appearances (87 starts) through his eight NFL seasons with the Bears, Buffalo Bills, Arizona Cardinals, and New Orleans Saints, per Pro Football Reference. He started all 16 games in a season four times (2013, 2016-18) over his career. Last season, the offensive lineman appeared in 10 games with three starts for the Saints.
Mills appeared in 37 games (34 starts) during his time with Louisiana Tech and was named First-Team All-WAC as a senior.