The Kansas City Chiefs recently tried out veteran cornerbacks Darius Butler, Frank Walker, Bryan McCann and Derrick Martin, according to a league source with knowledge of the situation. Butler is a former New England Patriots second-round draft pick who has also played for the Carolina Panthers and recently tried out for the Oakland Raiders. Walker has played for the Green Bay Packers, New York Giants, Baltimore Ravens and Dallas Cowboys. McCann has played for the Cowboys, Ravens and Raiders. Martin has played for the Ravens and Packers. Source: Scout.com
