Real Madrid’s Portuguese forward Cristiano Ronaldo © heads the ball during the Spanish league football match FC Barcelona vs Real Madrid CF at the Camp Nou stadium in Barcelona on December 3, 2016. / AFP / JOSEP LAGO

Real Madrid’s Portuguese forward Cristiano Ronaldo © heads the ball during the Spanish league football match FC Barcelona vs Real Madrid CF at the Camp Nou stadium in Barcelona on December 3, 2016. / AFP / JOSEP LAGO