The Redskins will be without tight end Chris Cooley for at least a couple of weeks, according to coach Mike Shanahan. "Keep our fingers crossed that he'll be back. When it will be, I can't tell you for sure," Shanahan said. Cooley has missed some practices because of a sore left knee. He had arthroscopic surgery on the knee following last season but has experienced swelling and irritation that has kept him off the field.