You've heard the phrase "one hit wonder."
It typically refers to the music industry, of course. But the same principal applies to NFL free agency.
Sometimes an NFL free agent can't get the long-term deal he wants and has to settle for year-by-year offers from teams who are only willing to make short-term commitments.
It's usually not the ideal situation for a player. But it usually beats the alternative—not playing at all.
Here are five big-name 2011 free agents who are going to find themselves on the open market again in 2012.