With Kool-Aid McKinstry considered the CB1 in New Orleans, that leaves all eyes turned on the man to his other side. In base defense, it will be Alontae Taylor on the other side. The New Orleans Saints are likely to play a lot of snaps with three or more defensive backs on the field, however, so expect Taylor to primarily be a slot defender.
The other boundary cornerback in nickel defense is up in the air. Whether it's Isaac Yiadom, Quincy Riley or Rico Payton, the other boundary cornerback cannot be an easy target. This would be the worst case scenario, because a liability has a trickle down effect.