“Arda Guler is my brother, but I support Barcelona,” said Shakhtar manager Arda Turan ahead of the latest El Clasico.
Barcelona will host Real Madrid in the 10th round of La Liga on 25 October, with kick-off scheduled for 22:00 Moscow time.
Turan, who played for the Catalan club during his career, was asked for his view on the meeting between the two Spanish giants. Despite his relationship with Guler, he backed his former side.
Barcelona go into the match at the top of the La Liga table, while Real Madrid are third.