http://lsu.247sports.com/Bolt/Arandas-options-at-linebacker-43784421 247 takes a look at LSU's thinnest group. Too much praise for Duke Riley IMO. Some players are going to have to change position. If KB goes down LSU is in trouble.
Key is undersized at DE. I say move him to LB. Corey Thompson is big enough to move down into the box.
I want to say that I've read recently that Thompson has indeed been moved to LB. I think he runs about 6-2, 225-230 or so.