Barcelona laboured to a 1-1 draw at Segunda Division B side Hercules in the first leg of their Copa del Rey fourth-round tie.
Real Madrid have been told they must pay €18.4 million to the local government.
The European Commission ruled on Monday that seven La Liga clubs have received illegal state aid in recent years, but why?
Real Madrid, Barcelona and five other La Liga clubs were ordered Monday by the European Commission to repay money to the Spanish government.
EU competition commissioner Joaquin Almunia has warned that any Spanish clubs found guilty of receiving illegal state aid will have to pay the millions of euros involved back quickly, with interest.