Real Madrid's Sergio Ramos has called for equally "fair and just" punishments to be given to referees after he received a five-match ban.
The 26-year-old saw red after a second bookable offence, and, according to the referee's report, sent a volley of abuse towards Ayza Gamez and his officials when leaving the field of play during Madrid's 4-0 home win over Celta Vigo in the Copa del Rey.
But after learning of his suspension, the defender has expressed his hope that in future, referees will be held accountable for their mistakes.
"Independently of whether I think it (the punishment) is fair or not, I want to apologise to the coaching staff, my colleagues and the fans," Ramos tweeted.
"I hope that it will be equal in fairness and justice with those given to referees."
Ramos' suspension will force Jose Mourinho to reshuffle his back line, already struggling in the absence of Pepe, Fabio Coentrao and Marcelo.