
Real paid Chelsea around 36 million euros (49.13 million dollars) for Robben two weeks ago.
The Dutch winger, however, is still suffering from the consequences of a March cartilage operation on his left knee - and will not be ready until late September.
Real defender Pepe - signed from FC Porto for around 30 million euros - will also be out of action for around three weeks, with a torn muscle in his right thigh.
DPA