The Pats really have no need for a CB unless they get rid of Law. In my mind the Poole and Law combo has been the best in the league this year.They may use Wilson as a CB next year and get another safety.
The Pats are really in a superb position with the draft (2 first rd,2 nd and two 4ths) So they can basically get a good RB,WR some Ol help and a little youth to the dl or lb corps.