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Super Bowl XLVII is over, and the NFL offseason kicked off when the confetti fell. We are just a scant few weeks away from the official start of the league year on March 12, and with it comes free agency.

As usual, the free-agent pool is full, and there will be plenty of movement when the clock strikes 4 o'clock on the 12th of March. Teams are actually allowed to begin negotiating with unrestricted free agents on March 9.

Which players are the cream of the free-agent crop? The following is a list of the top 50 free agents set to hit the market, at least before we know about franchise tenders or re-signing.

These rankings are limited to unrestricted free agents because the vast majority of restricted free agents stay with their teams. Players who are probably going to be free agents, but have not been released—Alex Smith or Michael Vick, for example—are also not on this list.