Green (concussion) is participating in Phase 2 of the Steelers' voluntary offseason workouts, ESPN.com's Jeremy Fowler reports.

Green had a disappointing first season in Pittsburgh, missing the team's first eight games while recovering from ankle surgery, and then sitting out the final two regular-season contests and all three playoff games due to a concussion. He did make a number of big plays in his six appearances, catching 18 of 34 targets for 304 yards and a touchdown, with five of his receptions going for 28 or more yards. The Steelers didn't select any tight ends in the draft, which suggests they still have high hopes for Green as a major pass-catching threat down the seam. He should be available for the rest of the offseason program, but his poor injury track record dates back to his time in San Diego, where he played 16 games just once in four seasons. His mounting history of head injuries is of particular concern.