Van Gaal , the former Ajax Amsterdam coach , will train the Spanish first divison club next season .
FC Barcelona 's new Dutch coach Louis Van Gaal ( R ) shakes hands with his predecessor Bobby Robson of Britain as they leave a Barcelona restaurant on June 30 .
Louis Van Gaal   , the former Ajax Amsterdam Louis Van Gaal , will train the Spanish first divison club next season .
FC Barcelona 's new Dutch coach Louis Van Gaal ( R ) shakes hands with his predecessor Bobby Robson of Britain as they leave a Barcelona restaurant on June 30 .