I pointed this out a few weeks ago when Walter had Steelers drafting ILB in the first. DL or TE would be in play as well. They could do with a really dominant NT, and depending on how they view Jesse James long term then they could be looking for Heath Millers successor.
Summary: Akeem Ayers is an interesting prospect. He has versatility and experience at different positions. However, while is frame says outside linebacker in a 3-4, he is probably best suited inside in that scheme or on the strong side in a 4-3 at linebacker. Some team might want him to add weight and play defensive end in their 4-3. Better yet, teams running a hybrid front might be intrigued with Ayers.