The 36-year-old linebacker will return to the Steelers, who need help at the position after injuries Sunday to Ryan Shazier and Jarvis Jones. Jones was placed on short-term injured reserve following wrist surgery.
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Harrison teased fans with a tweet and an Instagram post:
Longtime Steelers reporter Ed Bouchette of the Post-Gazette was more decisive:
Harrison starred during his 10 seasons in Pittsburgh, including five consecutive Pro Bowls and two trips to the Super Bowl. He spent last season with the Bengals.
