Well, ok, unpopular opinion here. You establish a culture for a reason. Even the players support the standard, without being told. Because they are always competing for that starting role.
Sark rotates guys constantly. If Nolen puts out little effort, he gets downgraded in the rotation. You look at the tape on Sunday, tell Nolen he took the play off, and he is getting fewer snaps next week because the other guys want it more than he does. I don't know, I am not anything like a college football coach. Does it work? Can you rehab someone from being shitty to being a performer? I look at the A&M 22 class, only one player dominates and that's Connor Weigman.
But to me, with the caveat that you only want the best of the best (of the best. I know but talent of certain kinds cannot be replaced), well passing on massive talent because they are a risk reminds me too much of the late Mack Brown era. Talent wins championships. We play Georgia, OU, and Alabama next year. I mean, damn. It's also worth considering that if we don't take him, we play against him.
All of that said, if experience shows it's not likely to work, then fuck him.