Chelsea's duo from Atletico Madrid will feature on tour.
Both stars were snapped ahead of jetting out, as revealed by the club's Instagram page:
Neither players have taken part in earlier pre-season friendly wins over Wycombe Wanderers or AFC Wimbledon, but will hope to play some part against RZ Pellets on Wednesday (23).
Left-back Filipe Luis has had a full break this off-season after a packed season with Atletico Madrid.
Striker Diego Costa played two games at the World Cup but has had a month off since Spain's surprise early exit.