As rumors still circulate regarding the Cowboys’ potential interest in Lions receiver Roy Williams, there’s a chance that, if they land him via trade, they won’t need to add his middle initial to the back of his jersey.

The other Roy Williams, the one who plays safety for the Cowboys, could be on the outs in Dallas.

During a Thursday appearance on Sirius NFL Radio (via the Dallas Morning News), Cowboys defensive end Greg Ellis said that Williams doesn’t fit within the defensive scheme employed by coach Wade Phillips.

Ellis claims that Williams first raised his concerns during training camp last season.  “He said, ‘Greg, this defense does not fit me.  I don’t fit in well with this defense at all.  So when he told me that, I was like, ‘Well, man, it’s still new.  Get used to it and it’ll probably be fine for you.’  And obviously I think it came to be true.  Just like he said, he doesn’t fit what’s going on here in Dallas right now.

“Now maybe this year, if they decide to keep him for this season, Wade and them will kind of adjust some things to fit him better.”

It’s highly unlikely that the Cowboys would simply cut him.  After June 1, any trade of Williams could divide the cap acceleration over two seasons, reducing the current year’s cap hit but pushing plenty of dead money into 2009.