Given the landscape at LB, I am beginning to think that NE will have to keep Colvin for his final year of his contract even if he doesn't restructure. They are already thin at the position. However, he is at the age where they normally don't want to start signing people to big money, multi-year deals, so I am not sure they will really try hard to get him signed longer term.
I'm beginning to wonder if the team might be best served to let Samuel walk and go on to some form of Plan B. I like Samuel as much as the next guy, but I think his value is higher on the Pats than it may be on another team. Put him on a so-so defense (with a fat contract) and I am not so sure he is an All Pro CB. Top 10, sure, Top 1 or 2 . . . not as sure.
If they did let Asante walk, they could probably afford Nnamdi Asomugha or Marcus Trufant AND a top LB like Briggs or Suggs (or maybe one of the ARI guys)for the same total cost (or thereabouts).
So in theory, they could have a secondary of Harrison, Meriweather, Gay (if they re-sign him), Hobbs, a free agent CB, and whomever they take in the draft. Logic would seem to indicate that NE would take someone like Michael Jenkins in the draft . . . but we all know that they are hard to pin down on a specific draft pick. With the starting DL intact and some upgrading at LB, I think that would be a decent unit.
I don't see how they could afford to keep Samuel and Moss, and I think it would be easier (and more prudent) to keep Moss. I think they could swing keeping Moss, adding an impact LB, and drafting and signing CBs.
While it is probably unliekly, imagine a LB corps of Thomas, Briggs, Colvin, and Vrabel with Seau and/or Bruschi subbing in.