I don't think Aaron Smith is a free agent. His contract was originally due to expire at the end of the 2011 season, but a year ago, in order to make his cap number more manageable, I believe they extended his contract by another year in order to restructure.Chris Hoke and Aaron Smith, defensive linemen: Local reports indicate Hoke will retire. Smith also seems likely to retire if the Steelers don’t bring him back. Both players are free agents. Smith has meant so much to the team, the Steelers could offer him a low-cost one-year deal to see how he looks in camp.