At this time last year, the New York Giants were deciding Saquon Barkley wasn't worth what he wanted to be paid, and the Philadelphia Eagles were quietly waiting to pounce.
Very few NFL free agency moves directly impact a Super Bowl championship like that one. But when free agency officially begins on March 12, there will be plenty of teams spending and trying to fill holes, hoping that those moves are even close as impactful as Barkley was to the Eagles.
Here are the top 10 storylines to track for free agency: