The team probably needs to bring back 1 player from each of those position groups. You can only fill so many holes in one off season, particularly if you aren't an active team in FA.
Last year
Sanu signed for 5 years 32.5 million
M. Jones signed for 5 years 40 million
Williams more closely resembles Jones stats before he hit FA. I think you can reasonably project Williams to be somewhere between the 2 of those or slightly higher so the agent and player can say they won.
He would have to be around what Sanu got for him to even have a chance at being back here imo. He's the one on that list who has the lowest probability of returning.
Those other guys probably have a decent shot at being back if the Cowboys want them. Nobody is going to be kicking their door in with big contracts due to the limitations each has.