how much his defense relies on the ability of the CBs to play tight and stay with their man. That was ND's weak spot on D this year. We lost our best cover man to the NFL, and out fastest to transfer. So, the concern is how well he and Mickens can get the CBs ready for the new scheme.
It sounds like he plays one safety in more of a rover position, so that's in line with ND's roster. But he also likes the three man front which ND will have to adjust to a bit.