Johnson was a limited participant in Wednesday's practice, sitting out team drills as he enters the final year of his contract, Ray Fittipaldo of the Pittsburgh Post-Gazette reports.
A report in early July suggested the Steelers weren't planning to extend Johnson, who may thus be hesitant to take part in full-team drills at training camp without a new deal in tow. Steelers head coach Mike Tomlin said he doesn't think Johnson's limited activity is a big deal, and it's possible a new contract is around the corner despite the report from a few weeks ago.