How do you get off the nfl pup rule?
A player who finishes the preseason still on the PUP list can
then be placed on the regular-season PUP list. Such players must
sit out the first six games their team plays. At that point, teams
have a three-week window in which to allow the player to begin
practicing; from the day the player begins practicing, teams have
an additional three-week window in which to decide whether to
activate the player to the 53-man roster. If either of those
deadlines pass, the player must remain on the PUP list for the
remainder of the season.