Real are anxious to wrap up the deal, with coach Bernd Schuster desperate to boost his numbers as his team struggles to find form in preseason.
Both clubs appear happy with the fee, with Chelsea having signed Ballack on a Bosman only 12 months ago. The Blues were seeking £24 million alone for Robben, so the £30 million Real will pay for the pair is seen as a victory inside the Santiago Bernabeu.