NFL free agency is about to start ... sort of.

In official terms, the league's window for signings won't truly begin until Wednesday. But noon on Monday marks the opening of the league's negotiating window in which other teams are allowed to contact the representation of pending unrestricted free agents and hammer out a deal.

The action is likely to come together quickly, with news breaking on agreements for top players not long after the so-called legal tampering period begins. And the movement likely won't end there, with more trades potentially materializing after the likes of Maxx Crosby, Trent McDuffie, DJ Moore and David Montgomery were shipped off last week.

USA TODAY Sports will have updates on all the latest rumors, news, agreements and trades throughout Monday, so check back often for more:

The New Orleans Saints could be instituting a changing of the guard in their backfield.