Well Titus Brown started his career at MSU as a LB and he has been called a tweener because he may end up being a LB or DE in the Pros. He has the frame to add more weight to be a bigger DE or lose a little weight to gain more speed to be a LB. He would be a good back up and speed rusher on third downs
I think the Saints are still looking for a speedrusher that they lost when Ninkovich went down. The Saints currently have two fat bullrushers and are in desperate need of speed off the edge on third and long. Brown might fit that bill in the later rounds. Look for them to draft one sometime on day two.
I think the Saints "draft shopping list" looks something like this -
CB
DT
LB
S
KR
QB
TE
DE
OG