Real Madrid have lost the services of Arjen Robben and Gabriel Heinze after the duo were injured on international duty.
Holland winger Robben, signed from Chelsea this summer, tore a thigh muscle and is now facing up to five weeks on the sidelines.
And former Manchester United defender Heinze will be out for three weeks after suffering a groin tear while with Argentina.
The duo will now be sidelined for the forthcoming UEFA Champions League double-header against Olympiakos.
Robben, who has made just two league starts for Real since leaving Stamford Bridge, will also miss Holland's Euro 2008 qualifier against Luxembourg.