Real Madrid's Mali international Mahamadou Diarra will be out of action for two to three weeks with a thigh injury, the club said on Monday.
The midfielder was injured in Real's 4-3 Primera Liga victory over Malaga on Saturday.
He joins Spaniard Ruben de la Red and Dutchmen Arjen Robben, who will be out for up to six weeks after suffering a leg muscle tear, and Ruud van Nistelrooy, who may undergo knee surgery, on the injury list.
Real Madrid, currently fourth in the league, two points behind leaders Barcelona, face third division Real Union at home in the second leg of the last 32 of the Spanish Cup on Tuesday. The Spanish champions lost the first leg 3-2.
