A. In the 2021 league year, players with three accrued seasons and a qualifying offer become restricted free agents when their contracts expire on March 17, 2020, at the end of the 2020 league year. Unrestricted free agents have four or more seasons of experience. B. The new CBA also added a fifth type of free agent: the transition player. Transition players are players who were on an existing roster on August 31, 2019, that had one or more years remaining on their contract and did not qualify for free agency. Only five players on an original 53-man roster can be signed to new contracts during the season; the other nine players become free agents. If a team wishes to re-sign a ninth free agent, the contract must include a post-June 1 designation. A sixth free agent can be signed after the start of the regular season. Teams can only carry a maximum of 75 players on their active rosters at any given time during a game. In the NFL, there are two types of free agents: unrestricted and restricted. Under the current CBA, all players except for those who have played less than four seasons or are on injured reserve have their contracts expire at the end of the season. Unrestricted free agents can sign contracts with any team they choose. Restricted free agents can sign contracts only with teams that have been granted permission by their previous employers.