Poyser plays the nickel, in my opinion he is the best option on the roster for that position. Poyser played nickel exclusively at Jacksonville State. That is where they were playing him before Fitz got hurt vs FSU.
Here is how I see it
Boundary CB: Xavier Lucas, 6-2 203
Field CB: Ethan O'Connor, 6-1 195
Nickel: Zechariah Poyser, 6-2 200
Boundary Safety: JJ Dunnigan, 6-3 205
Field Safety: Bryce Fitzgerald, 6-1 188
Miami can be nasty with this line up, this put everyone where their skill set can shine. Use Omar as a situational blitzer and run defender.