Jennings follows James Franklin and several others to Blacksburg.
Brezina totaled 51 tackles, three tackles for loss, one forced fumble, and one fumble recovery across his Cyclone career.
Kuol has four years of eligibility remaining.
He was released from his signing with Iowa State.
Hansen ran for 952 yards in the 2025 season.
Bacon led the Iowa State defense with 652 snaps played in 2025.