1) Vince Wilfork
2) Terrance Knight on
3) Chris Culliver
I don't believe the depth and quality is there at DT to get the Patriots the help they need at the position so I would bring back Vince and bring in Pot Roast, at which point their DL would be all set for 2015.
LB is in very good shape so I would pass on that.
Losing Revis and Browne means they really need help in the secondary so I would go after Tramon Williams or Culliver in free agency and make CB a draft priority.
I have felt all along that they should use free agency for defense and the draft for offense this off-season and that hasn't changed, but I would look seriously at CB,in the first two rounds of they take the approach above.