The new league year officially begins on March 13th at 4:00pm ET. At that moment deals that have come together in the legal tampering period will become official. While the ball dropping on the NFL, so to speak, is an important part of official business, much of what happens at the exact moment in time happens in the lead up.
It has long been assumed that the Dallas Cowboys will be rather busy in the time leading up to this deadline as they have some contractual matters to take care of. While the new league year beginning will not impact the contractual situations of CeeDee Lamb (currently entering the final year of his deal) or Micah Parsons (eligible for an extension for the first time), there are other Cowboys players who will need to be retained.