CJ Clark would be a great addition - I think he'd be more effective in a 4 down front and the occasional 3 down. Gibson runs almost exclusively 3 down and he was the Nose on that line. He's a good size kid at 305 but not exactly a great fit to play that position. He's built more suited to play in our system beside someone like JHH.
Probably a borderline starting caliber player and starts for us with what we have returning. I'd like to see him be our first guy in the rotation, that would be ideal but not likely. He's probably going to be your starter if he's coming.
I think the staff anticipates Justin Scott having a Bain type of impact at DT. Maybe not ACC DROY and the stats but comes in and earns 2 deep reps right away and could start if you need him to. Expect a big jump from Horton, expect Moten to continue to develop, and need JHH to come back and it's a very serviceable unit. Get Clark and you need at least 1 more. As many as 3 more depending on what JHH does and Burroughs TBD status.