The Saints will begin their search for a new defensive coordinator with one of the most coveted candidates on the market Gregg Williams, according to a league source. Williams, a former head coach in Buffalo and defensive coordinator in Jacksonville, Washington and Tennessee, arrived in town Wednesday night and will meet with Saints Coach Sean Payton, General Manager Mickey Loomis and other team officials today. This is the only interview lined up for the Saints, who fired coordinator Gary Gibbs on Wednesday.