The Pittsburgh Steelers kept one of their key backups by reaching a two-year agreement with linebacker Keyaron Fox.
Fox, according to a source, agreed to a two-year, $1.8 million deal that included a $380,000 signing bonus. The 27-year-old linebacker came to the Steelers in 2008 and helped out as one of the key players on special teams, appearing in 13 games and finishing second on the team with a career-high 21 tackles in kick coverage.
Fox was a third-round choice of the Kansas City Chiefs in 2004 and spent four seasons there. He started four games in 2006 for the Chiefs, but his career has mostly been as a backup and special teams player.
He will become the fifth free agent to re-sign, joining cornerback Fernando Bryant, guard Trai Essex, linebacker Andre Frazier and guard Chris Kemoeatu.
Unsigned are quarterbacks Charlie Batch and Byron Leftwich, defensive end Orpheus Roye and punter Mitch Berger.
John Clayton is a senior NFL writer for ESPN.com.