I noticed this unit has 3 All-Americans - the two DTs and Kenjon Barner. Lotuleilei was the only first teamer.
But, this is more a random look-ahead to what numbers these guys might wear, and it might not be easy.
Lotuleilei wore 92 in college- currently worn by Dwan Edwards. Kawann Short's 93 is Chase Blackburn's (though I doubt anyone's seen him in it, so it won't matter). As a matter of fact, 96 is the only 90s number available. 70, 72, 74 are out there; 70 is the number Ed Kugbila played under.
For LB AJ Klein, 53 and 56 would be available; he played under 47 at Iowa State.
Kenjon Barner's 24 is Josh Norman's.