Cris Carter
Hall of Fame receiver Cris Carter retired after the 2001 season, but returned when the Dolphins signed him in October 2002. He played five games for Miami and caught only eight passes, but proved that he could still play even at age 37.
Sports blog information from USA TODAY.
Rob Gronkowski will return as a Tampa Bay Buc, becoming another player who returned after retiring.
Hall of Fame receiver Cris Carter retired after the 2001 season, but returned when the Dolphins signed him in October 2002. He played five games for Miami and caught only eight passes, but proved that he could still play even at age 37.