As long as he doesn't expect a HUGE contract, Sharper is the man for us to get. He has been successful in both 3-4 and 4-3 defenses. Jamie is a bit younger than Zach, and has been emerging since Baltimore's superbowl stint. A linebacker corps like;
Zach Thomas
Junior Seau
Jamie Sharper
Donnie Spragan
Eddie Moore
Derrick Pope
Brandon Ayanbadejo
Jason Taylor (conditionl 3-4 rusher)
Looks excellent to me. I can see Thomas, Sharper, and Seau being the starting linebackers in the 4-3, then moving Seau into the middle with Zach and dropping Jason Taylor back to OLB in 3-4 situations. Not to mention Eddie Moore, and Donnie Spragan will be playing several downs per drive as relief. Pope, and Ayanbadejo are also trustworthy depth.