FRISCO -- A suspension looms for Terrance Williams and the Cowboys.What remains unknown are the length and when it will be handed down.There's an anticipation that the impending suspension for the Cowboys receiver will fall in the range of two to four games, sources said. Since no decision has been rendered at this stage -- a source said the NFL has yet to notify Williams of a ruling in writing -- it's unlikely any action will be taken before the Cowboys face Seattle this weekend.The league is reluctant to issue a ruling late in the week after allowing a player to practice with his team to prepare for an upcoming game.