Steelers try, unsuccessfully, to bring back Thaddeus Gibson

The Steelers picked linebacker Thaddeus Gibson in the fourth round of the 2010 draft.  During his rookie season, Gibson was cut by the Steelers. He landed with the 49ers, appearing in two games.  And he was recently waived by the Niners. Of all teams, the Steelers put in a claim for him. PFT has confirmed…