"I've got a lot of confidence in Mike Cassity," U of L head coach Bobby Petrino said. "I've known him for a lot of years and I really like his style. I think he'll give our defense confidence."
"I'm extremely excited to be a part of the Louisville football family," Cassity said.
Cassity believes in an attacking defensive style, but that wasn't always the case.
"I've evolved from a bend but don't break philosophy to more of an attacking style," Cassity explained.
He's a native of Fort Campbell, Kentucky and a graduate of Paducah Tilghman High School and the University of Kentucky.
Director of football operations, Tony Levine, will also return to the field and along with Coach Reggie Johnson, and will coach the linebackers.
Inside the Ville will have more on this staff change soon.