Tyrunn Walker, who played the last three seasons for the New Orleans Saints, was signed by the Lions on Thursday night.
The defensive tackle, who is 6-foot-3 and 294 pounds, signed a one-year deal worth about $1.75 million per the team web site.
Walker wasn’t tendered by the Saints as a restricted free agent.
He played in 16 games in 2014 as a rotational player on the defensive line. He had one start. He finished with 19 tackles, 2.5 sacks and a forced fumble.
Walker, who played at Tulsa, signed as an undrafted free agent with the Saints in April 2012.