David Mendes da Silva GonÃ alves ( born 4 August 1982 in Rotterdam ) is a Dutch footballplayer of Cape Verdean heritage and plays for F.C. Red Bull Salzburg in the Austrian Bundesliga as defender or defensive midfielder . David Mendes da Silva GonÃ alves ( born 4 August 1982 in Rotterdam ) is a Dutch footballer of Cape Verdean heritage who plays for Red Bull Salzburg as a midfielder .