‘An exclusive rights free agent is a player who has two or fewer years of NFL experience. By making a contract offer – typically the third-year veteran minimum – teams can secure the rights of that player, because they are not permitted to negotiate with other teams. The only option they have is signing the contract offer – or sitting out the season. Players with three years of experience who reach the end of their contract are considered restricted free agents. The Bills do not have any of those this year. Once a player has four years of experience, he is an unrestricted free agent when his contract expires. Buffalo has 18 of those on its roster.’