Former Steelers Willie Parker, Joey Porter, Aaron Smith and Marvel Smith will retire as members of their old team prior to Friday night's practice.
Aaron Smith spent his entire 13-year career with the Steelers. He had 408 tackles, 44 sacks and one interception in 160 games.
Porter played the first eight seasons of his 13-year career with Pittsburgh. The four-time Pro Bowl selection also played two seasons with the Cardinals and three with the Dolphins.
Parker played for the Steelers from 2004-09, rushing for 5,378 yards and 24 touchdowns. He rushed for over 1,000 yards from 2005-07.
Marvel Smith was an offensive lineman for the Steelers from 2000-08.