What criteria must be met for a player to become eligible for Unrestricted Free Agency?

A player must have four or more accrued seasons in the NFL to be eligible for Unrestricted Free Agency. This criteria is established by the Collective Bargaining Agreement (CBA) and is crucial as it differentiates between players who have significant experience in the league and those who may have shorter tenures. An accrued season is defined by being active on the roster for at least six games in a regular NFL season, and achieving this threshold allows players to explore contract opportunities without restrictions after their current contracts expire.

The other choices do not affect free agency eligibility in the context of the NFL. Exposure in international leagues does not relate to a player's status within the NFL. Participating in pre-season games and attending team workshops are activities that may enhance a player's skills or relationship with the team, but they do not impact their eligibility for Unrestricted Free Agency. Thus, the requirement of having four or more accrued seasons is the definitive criterion for becoming an Unrestricted Free Agent.