Jacksonville Jaguars defensive lineman Rodney Gunter is stepping away from football because of an enlarged aorta.

Gunter, who had been placed on the team’s non-football injury list at the start of training camp, dropped the news in a statement Sunday.

Gunter said his aorta measures 5 centimeters, half a centimeter shy of meeting the criteria for surgery.

Gunter signed a three-year, $18 million contract with Jacksonville in free agency in March, giving the team a potential replacement for give-time Pro Bowler Calais Campbell.