Valdes faces suspension for ref abuse
Valdes was furious at the official's decision not to award a late penalty in their 2-1 loss to Real Madrid, following a challenge from Sergio Ramos on Adriano.
Although further from the action than any other player on the pitch, Valdes protested more vehemently than any of his team-mates and had to be restrained by a member of the club's staff.
Shouting angrily in the referee's face, Valdes was shown a yellow card but continued to protest until Perez Lasa produced a red moments later.
According to the referee's report, Valdes verbally insulted the official, shouting: "You (the officials) s**t yourselves, you have no shame."
And Perez Lasa claimed the 'keeper, who will leave Barcelona when his contract expires in 2014, kept on repeating: "You have no shame."
The referee's full report reads as follows: "Once the game was over and while were still on the field of play, I booked Barcelona player, No. 1, Victor Valdes Arribas, for squaring up to me with his arms aloft and his voice shouting, recriminating one of my decisions. I then sent off the same player for shouting repeatly in my face, from just a few centimetres: 'You (the officials) s**t yourselves, you have no shame.'
"After he was sent off, the same player persisted with his attitude and kept on saying, in the same tone: 'You have no shame.' He had to be restrained by his team-mates and a delegate from his club. Once we were in the tunnel, the same player persisted with his attitude and repeated the same thing as he had before, still shouting: 'You have no shame, you have no shame.'"
Meanwhile, Gerard Pique stoked the flames after the game by saying: "I hope Perez Lasa apologises next time he referees one of our games."
Real defender Ramos was handed by a five-game ban by Spain's fooball federation (RFEF) for insulting referee Miguel Angel Ayza Gamez in a match against Celta Vigo in January and Valdes could now face a similar sanction.