It's important to look at their free agent situation:
Knowshon Moreno, RB - starter
Andre Caldwell, WR
Eric Decker, WR - starter
Winston Justice, OL
Zane Beadles, OL - starter
Dan Koppen, OL
Robert Ayers, DE - starter
Jeremy Mincey, DE
Shaun Phillips, LB - starter
Stewart Bradley, LB
Paris Lenon, LB
Wesley Woodyard, LB - starter
Champ Bailey, CB
Quentin Jammer, CB
Dominique Rodgers-Cromartie, CB - starter
Steve Vallos, C
Mike Adams, S
Michael Huff, S
Plus starting CB Chris Harris most likely won't play next year having gone down with an ACL in the playoffs. They just signed Talib to a stupid contract to replace him.
Just saying you can't only looked at the cap space as often a lot of that will be sucked up in staying even.
We are losing a NT who doesn't seem to fit the new D, a LG who was done anyway and a DE who I wish they would re-sign, but we'll see, and a FB who can be re-signed or replaced easily.
So is the moral of this story, have 5-ten 4/5 star guys then fill in the rest of the pieces with draft picks and high end short term guys.