Here are Briggs stats for this year, he ranks 28th overall.
Lance Briggs
I would sign him for a lot less than they were offering last year (1/2 price) otherwise no deal. The other free agent I would pursue would be Nnamdi Asomugha. His stats are not impressive which leads to believe that he would be more affordable than Samuels or Trufant, but he's a hell of a player and is 6'2".
Nnamdi Asomugha