The move to start Rex Grossman at quarterback against the Cowboys on Sunday over Donovan McNabb has angered the latter's Washington teammates. "The guys are extremely pissed," one player told NFL Network insider Jason La Canfora. Redskins coach Mike Shanahan says that there's no guarantee McNabb will play again this season. "I also told him," Shanahan said, "that I cannot guarantee him that he will be back next year."