Safety Roy Williams has asked the Cowboys to either trade or release him by Tuesday.
The Cowboys aren't having much luck finding a taker with teams believing he's going to be released anyway. Trading or releasing Williams would save $2 million against the salary cap.
http://www.rotoworld.com/content/Home_NFL.aspx
I think it would give the Bills exactly what they want, a big enforcer to stick in the box. This would then free up Whitner so he can be the FS the Bills want him to be. He could be had cheaply, as well.