The Steelers signed Clark to a one-year contract Friday, Jordan Schultz of TheScore.com reports.
A 2016 third-round pick, Clark spent the first four years of his career with the Colts before signing one-year deals with the Eagles and Titans each of the last two seasons. He now joins his fourth team in four years. Clark has 64 games of experience, including 18 starts, and will compete for a swing-tackle job with the Steelers.