Saleapaga will be a player to watch in the fall but without any thing to go off, I don't see how coaches could really put him in the 3 deep.

Morgan Unga has played in 20 games at BYU at LB and on special teams (he blocked a kick or punt last year iirc). Pulsipher has played a ton at LB last year and Isaiah Kaufusi had a really strong spring. They may not get much PT due to the talent ahead of them but they are good players who provide good depth. Phillip Amone was another LB who got into games last year but wasn't listed on the 3 deep so there is some experience behind the starters.