The signs seem to be pointing Keyshawn Johnson north to Seattle. One of the most intriguing subplots of the current NFL free-agency period involves Johnson, a three-time Pro Bowl receiver released Tuesday by the Dallas Cowboys. The 33-year-old Los Angeles native already has expressed interest in talking to the Seahawks. "It's a team that he would be interested in playing for," said Jerome Stanley, Johnson's business associate. "Seattle is on Keyshawn's radar, that's safe to say."