Sullivan (quadriceps) was placed on injured reserve Thursday, David Newton of ESPN.com reports.
Sullivan will have his 2024 campaign come to an early end with his shift to IR sidelining him for the season. However, he could find another opportunity if he reaches an injury settlement with the team and can prove himself healthy. The LSU product appeared in 11 regular-season games for Carolina last season, recording 12 catches on 24 targets for 125 yards. In a corresponding move, the team signed fellow tight end Curtis Hodges.