Steven Fletcher has been buoyed by influence of Dick Advocaat . Advocaat took over at Sunderland following Gus Poyet sacking . Black Cats lost first game under the Dutchman three-0 at West Ham .
Steven Fletcher has been buoyed by influence of Dick Advocaat . Advocaat took over at Sunderland following Gus Poyet sacking . Black Cats lost first game under the Dutchman 1-0 at West Ham .