NFL offseason calendar 2025. Franchise tag window opens: Feb. 18; NFL combine: Feb. 24 to March 3; Franchise tag window closes: March 4 NFL legal tampering begins: March 10 NFL free agency, new ...

On Monday, March 10 at noon ET, teams are permitted to contact and begin negotiating contracts with the agents of players who are unrestricted free agents. This is the legal tampering period.