It’s not too much to say that these two teams are the most strongest soccer teams in the world. Members, popularity, history, money and coach are in excellent level, and they are fateful rivals.
From the viewpoint of leadership, these top two teams are really interesting because of the difference of their coach’s character. Barcelona’s coach is Josep Guardiola, he played for Barcelona long time and then he was idol of the team. On the other hand, Jose Mourinho, the coach of Real Madrid was not skillful soccer player. He hold a coach position in many big or small club. Contrasting their situation cause the way of expressing leadership, I guess.