Barcelona midfielder Xavi has been ruled out of Saturday's El Clasico with Real Madrid at the Santiago Bernabeu.
Xavi came back from injury for the 3-1 defeat to Real on Tuesday night but it has proved too early and he will now face a further spell on the sidelines.
The club are now hoping that he will be able to play against AC Milan in the second leg of the Champions League last-16 tie.
Xavi has played in 37 El Clasicos in his career, the highest number by any current player.