Sport reports that Barcelona’s international director of football, Ariedo Braida, watched the game between Dortmund and Bayern Munich on Saturday.
Braida attended the game to watch four Borussia Dortmund players in action.
Midfielders Ilkay Gundogan and Julian Weigl and forwards Marco Reus and Pierre-Emerick Aubameyang were reportedly the players the Catalans are keepings tabs on.