Troy Polamalu never planned on leaving the Pittsburgh Steelers. Still, the defending AFC champions didn't want to take any chances, signing the star safety to a contract extension through the 2014 season. The deal is worth $36.5 million with $10.55 million guaranteed, a league source told ESPN NFL Insider Adam Schefter. Polamalu, the 2010 NFL Defensive Player of the Year, actually signed the contract at Pittsburgh International Airport on Saturday just before the team boarded a plane to Baltimore. Read more: http://espn.go.com/nfl/story/_/id/6...h-steelers-agree-four-year-contract-extension
