12:45pm: It’s a three-year, $3.8MM deal, a source tells Ian Rapoport of NFL.com (on Twitter).
12:19pm: The Steelers and Darrius Heyward-Bey have agreed to a multi-year deal, Rand Getlin of Yahoo Sports tweets. Heyward-Bey had multiple suitors, Getlin adds, but the receiver felt that it was important for him to stay in Pittsburgh. 
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Heyward-Bey, 29, was active for all 16 games for the Steelers in 2014, but didn’t see much action, earning just five targets on the year. In 2015, he got more involved in the offense. In 16 games (four starts), the wide receiver hauled in 21 catches for 314 yards and two scores. Heyward-Bey was targeted only 39 times, however, which is a big step down from the looks he used to see with the Raiders for his first four seasons and with the Colts in 2012.
Photo courtesy of USA Today Sports Images.
Nice job resigning him. Not a bank breaking deal and he brings speed and depth to the WR position and special teams.