The two clubs have not yet agreed a fee for the Dutch winger, but it is believed he could cost Real about £15m.
The 23-year-old joined Chelsea from PSV Eindhoven for more than £12m.
The two clubs have not yet agreed a fee for the Dutch winger, but it is believed he could cost Real about £15m.
The 23-year-old joined Chelsea from PSV Eindhoven for more than £12m.
