Real Madrid will have to do without Vinicius Júnior in the top clash away against Liverpool in the Champions League.
"After tests, our player has been diagnosed with a thigh injury in the back", writes the La Liga club in a statement.
Spanish media report that the star may be out for a month, which means that the Brazilian will also miss the Champions League match against Swedish national team player Isak Hiens' Atalanta on December 10.
Real Madrid face Liverpool on Wednesday.