data-mm-id=”_unbhevmci”>On March 18th, free agency opens in the NFL, which should kick off the wildest off-season we've seen in recent memory. Some of the players who have shaped the past decade and a half of pro football – Tom Brady, Drew Brees, Philip Rivers, and A.J. Green among many, many others – are set to hit the open market, some for the first time in their careers. We don't profess to be fortune tellers as to where they'll eventually end up, but we'll try our best.NFL Free Agency Predictions Drew Brees Will Return for 2020, as a SaintSince the new year dawned, the Saints' future Hall of Fame quarterback has waffled on whether or not he will return for the 2020 season, with his stance shifting from "definitely returning" to "maybe returni…