Do NFL players who get cut ever play football again?

Players who are cut become free agents and can negotiate with any team. While the vast majority of these players do not play in the NFL again there are some who do and become very good players, even Hall of Famers. Maybe the most famous player who was cut was John Unitas, Hall of Fame quarterback, who was drafted by the Pittsburgh Steelers and released. He signed with the Baltimore Colts and became one of the most feared and respected quarterbacks of all times. So it can happen.