Barcelona coach Hansi Flick launched an impassioned defence of referees in Spain on Friday, criticising how they have been treated and calling on the RFEF to take action.
Liverpool have been drawn against Paris Saint-Germain in the Champions League round of 16, while holders Real Madrid face local rivals Atlético Madrid.
Barcelona's financial situation continues to improve after LaLiga confirmed their annual spending cap is now over €463 million ($483.7m), an increase of nearly €40m from the beginning of the season.
On loan Manchester United winger Antony scored for the third consecutive game to continue his excellent start to life in Spain as Real Betis beat nine-man Real Sociedad 3-0 on Sunday.
Barcelona coach Hansi Flick has warned his players against showing "weakness" by arguing with referees after Real Madrid's Jude Bellingham was sent off
Athletic Club forward Iñaki Williams has said teammate Maroan Sannadi was racially abused by home supporters during his side's 1-1 draw away at Espanyol in LaLiga on Sunday.
Espanyol have expressed their "total condemnation" of an "unacceptable" incident in which Barcelona's Mapi León appeared to touch their player Daniela Caracas in the crotch area during Sunday's Catalan derby in Liga F.
Manchester United winger Antony continued his fine start to life on loan at Real Betis with his first goal for the LaLiga side during Saturday's game at Celta Vigo.
Ferran Torres scored a hat trick in the first half hour to lead Barcelona to a 5-0 victory over Valencia and a spot in the semifinals of the Copa del Rey.
Barcelona missed out on over €7 million ($7.2m) as part of Nico Gonzalez's €60m ($62m) transfer to Manchester City after Porto exercised a clause before the move.
LaLiga president Javier Tebas has said the league is still fighting to have Barcelona forward Dani Olmo unregistered for the second half of the season.