Of the top-tier FAs, they are probably in negotiations with several at the same time. Which agent will agree to terms first is the better question.
Smith, Rodgers, and Ginn could sign at any time. Goldson will likely wait for the start of free agency, then get signed by the 49ers. Snyder may also wait for free agency but I suspect he will return. He is not likely to get much more than the 49ers offer him on another team, and he is going to the SB if he stays with this team!
Morgan isn't going anywhere else, either. He was injured all year, which substantially diminishes his FA value. He, too, is real close to a SB with this team. Morgan stays.
Costanzo will sign - he is here because of Brad Seely and he wants to stay with his coach.
Larry Grant should be 2d round tendered. He may well leave the team but they would get a decent return in exchange.
[ Edited by longtime49erfan on Feb 28, 2012 at 1:42 PM ]