"I chose Louisville because of the coaching staff, especially my relationship with Coach Cassity," Mann told ITV shortly after making his decision. "I was also impressed with the crowd attendance and the fact that they'll be playing in the Big East with a chance to play in a BCS bowl."
Last week the safety prospect made his first visit to Louisville, traveling to the River City with Don Bosco Prep assistant coach Ty Caldwell.
"We spent two days in Louisville," Caldwell said. "Darius fell in love it with it and didn't want to leave."
While visiting the Cardinals football facility, Mann took the opportunity to visit with head coach Bobby Petrino and others, as well as watching the team play a 7-on-7 inside Papa John's Cardinal Stadium.
"He really liked how all the players are excited for the upcoming season and how together they all are," said Caldwell.
With an impressive 6-foot, 180-pound frame, Mann is slated to come in and compete right away for playing time in the Cardinals secondary.
"Coach told him that they have no intention of redshirting him," Caldwell explained. "The coaching staffs plan right now is to bring him in as a safety, but they've told him that he could quickly grow into a linebacker."
A possible position change wouldn't worry Mann.
"He's the type of kid that will do whatever it takes to win and what the coaching staff asks," Caldwell said.
Mann will open his final season at Don Bosco Prep on September 8th.