Broncos' receiver Javon Walker returned to practice Wednesday, a sign that his right knee has possibly healed enough to allow him to play Sunday at Chicago. Walker has missed the last eight games due to his injured right knee. He had surgery to clean out the knee on Oct. 19 in Houston. "It's feeling pretty good," said Walker, who tore the ACL in his right knee in the 2005 opener while with Green Bay. "It's not completely healed. But it's something I can work through. It feels good." Broncos' Coach Mike Shanahan was encouraged by the presence of Walker on the practice field. The limp was barely detectable as the sixth-year receiver ran pass routes.