Rhattigan, Panthers alumnus and special-teams ace, joined Seattle as an undrafted free agent before stints with Seattle and Carolina. His Steelers signing adds a veteran, capable depth LB and a prolific coverage player to Pittsburgh's practice squad, with strong implications for special-teams units and potential active-roster opportunities if injuries arise.

Rhattigan, Army product, went undrafted in 2021, spent three seasons with Seattle (36 games, 32 tackles) and joined Carolina for 2025 (16 games, 12 tackles). Primarily a special-teams contributor, he’s known for diagnosing play flow, strong wrap-up tackling, and run-fitting awareness. Steelers hosted him to gauge inside linebacker depth ahead of Week 1, signaling potential depth competition or a valuable special-teams option if signed.

Jon Rhattigan's versatility as a linebacker makes him an intriguing candidate to watch in training camp as he vies for a spot on the final roster.

Jon Rhattigan is set to step up in the absence of both Trevin Wallace and Claudin Cherilus, contributing to a severely undermanned linebacker corps. His role becomes crucial as the Panthers prepare to face a formidable Arizona Cardinals run game.

With the injuries to Trevin Wallace and Claudin Cherelus, Jon Rhattigan is expected to step up as one of the remaining inside linebackers on the Panthers' roster, likely taking on a starting role this week.