The refereeing performance of Juan Martinez Munuera, and the malfunction of the semi-automated offside system in the match between Barcelona and Atletico Madrid caused significant anger within the club, as the team is considering filing an official complaint to the Spanish Football Federation.

According to the Spanish newspaper 'Mundo Deportivo,' Hans Flick strongly criticized the refereeing performance, pointing out that the referee should have given a yellow card to Giuliano Simeone on his first touch due to a foul on Alejandro Balde. The club was also surprised that the player avoided a direct red card after a second violent foul on the Catalan defender in the second half.

The management, technical staff, and Barcelona players were also surprised by the long time it took to review Pau Cubarsi's goal, which was canceled in the 52nd minute, after six and a half minutes of play stoppage. No explanation was received on the line during the stoppage, which increased the anger, especially since the semi-automated offside system could not generate digital images of the play due to the density of players in the area.

The Technical Referees Committee explained that the malfunction resulted from the system's failure to model the players due to their density, and after an unsuccessful attempt to recalibrate, the video referee team used manual lines to make the final and correct decision. Consequently, Barcelona is expected to assess the situation on Friday, and it is likely to file an official complaint to the Spanish Federation.