According to rotoworld, his salary next year is going to be $5.1 million dollars.
It's well know that there's a strong probability ( maybe even certainty ) that Leonard Davis ( $6 millions ) and Marion Barber ( $4.24 millions ) will not be back next season. That leaves 4 highly paid offensive starters ( TR, Witten, Austin, and RW ). It's also assumed that Doug Free will be resigned.
The following players are unrestricted FA and most, if not all, will not be back:
Marcus Spears = $1.3 millions (off the books)
Jason Hatcher = $1.8 millions ( off the books )
Stephen Bowen = $1.8 millions ( off the books )
Alex Barron = $2.8 millions ( off the books )
Keith Brooking = $2 millions ( off the books )
Montrae Holland = $1.8 millions ( off the books )
Sam Hurd = $1.8 millions ( off the books )
Gerald Sensabaugh = $1.8 millions ( off the books )
Kyle Kosier = $3 millions ( off the books )
That's 9 players totaling 18 million dollars, 11 players totaling 28 millions if Davis and Barber are counted.
There are also bubble players: Terrence Newman and Roy Williams himself. Cutting them both would add another 13 million dollars ( Williams - 5, Newman - 8 ) making it a grand total of 13 players with 41 million dollars in present and next year's salaries.
The team would have to use some of that money in finding replacements for those players ( especially T-new, Sensabugh, Spears, Kosier and Davis who are starters ) and build back depth, however.
Some of the starters and depth are going to, or can, come from within ( Costa, Young, Brewster, Bright, Choice, Ogletree, Scandrick - who had a solid performance yesterday -, Church, AOA, McCray, Brent, McCann, Lee, Williams [both], Lissemore.. etc )... some will come from the draft, but the most important pieces who will contribute right away will come through free agency, depending who's available.
If it was up to me, and depending on who's available in free agency, I'd start with the high figure. I'd cut, or chose not to resign, the 13 players that would save and/or free up 41 million dollars. I might bring a couple of back ( Bowen, Hurd, Kosier ) but for a reduced priced, say a million each, which is the high end vet minimum and as experienced depth only.
I then go shopping. Free agency: Carl Nicks and Logan Mankins are my top targets. I want them both and do everything within reason to get them. They would be the perfect scenario and the center pieces of the off season. If I only end up with one, I'd be sad, but not disappointed ( I'm greedy, sue me

), because even with one, the restructuring of the roster would be well on the way. After getting one, if not both of those guys, I'd then turn my attention to the CB position. Again, depending on where the pick in the draft is, I'd look for a veteran CB who's not a " great " ( meaning expensive ), but a solid player who doesn't mind being a back up.
Other than Peterson, here's the problem with drafting a CB or even a Safety with that pick: assuming Newman is released, the top guys will be Jenkins ( 4th year ), Scandrick ( 4th year ), McCann ( 2nd year ). There's alot of youth in that group to add yet another young guy who'll likely be a developmental project. If it's Peterson, then all bets are off.
Samething with safeties. Assuming that Sensabaugh is not brought back, it would be Church, AOA, and McCray. There are no Safeties in the draft that one can point at and say " yea, he's sure starter from day 1 ", so, just like CBs, my direction would be towards an experienced, cheap as possible, solid player who'd bring some estability to that group. UNLESS there's a top FA that I simply cannot pass up, but I don't know of any at this moment.
After addressing the interior O-line needs, and restructuring the starting line up ( defense: Start Brent at NG, move Ratt to DE, rotate Lissemore with Olshansky - who, by the way, many people have been ragging on undeservingly so, start Lee plus the young safeties ), I'd then go on to the business of adding depth through the draft and 2nd tier free agents. It would be a less talented roster, but it would be leaner, even younger, and perhaps a hungrier one.