(By Rick Bonnell, rbonnell@charlotteobserver.com) Looking to address the Charlotte Bobcats' need for a backup power forward, general manager Rod Higgins has contacted agents for Antonio McDyess and Brandon Bass.McDyess, who played for the Detroit Pistons, and Bass, a Dallas Maverick, are both unrestricted free agents. Higgins said both discussions were preliminary, but he made it clear either one could fill a hole on the depth chart.“You look at our roster, and he makes a lot of sen...