You can't seriously be considering banking on the guy who was a late round pick and blew his knee out, never playing a game his rookie year, to take over the starting OLB spot.
The guy was a tackling machine, for sure, but I really only envisioned him as a ST star, and maybe a contributor on D in the future.
That said, the FA market is far better at OLB than at DE, TE or C. Hopefully we bring a guy in at OLB and then draft DE, TE and C.
Mind you, if Raji is there, you take him. Same goes for Crabtree.