Greg Jackson (American football)

Gregory Allen Jackson (born August 20, 1966) is an American football coach who is the safeties coach for the Houston Texans of the National Football League (NFL). Jackson is also a former player who played safety in the NFL for 12 seasons for the New York Giants, San Diego Chargers, Philadelphia Eagles, and New Orleans Saints. He was drafted by the Giants in the third round of the 1989 NFL Draft and played college football at LSU.
Playing career.
In 1994, he took over from Wes Hopkins as the starting free safety of the Philadelphia Eagles, and played there the following year, until he was replaced by rookie Brian Dawkins.
Coaching career.
Jackson was hired as assistant secondary coach by the San Francisco 49ers on February 17, 2011. After Jim Harbaugh left the 49ers to coach at the University of Michigan, he brought Jackson with him to serve as the secondary coach. 
In 2016, Jackson returned to the NFL when he was hired to be the safeties coach for the Dallas Cowboys. When Jason Garrett was fired in 2020 Jackson was let go from the team. Jackson was hired by the Houston Texans as their safeties coach on March 10, 2021.