After being dumped out of the UEFA Champions League, Barcelona boss Xavi Hernandez lashed out angrily at the referee's performance on Tuesday night.
The Catalan side went into the second leg of their UCL quarter-final with a one-goal advantage after emerging 3-2 victors from the first leg.
The match started as well as they would have hoped, with Raphinha opening the scoring in the 12th minute at the Estadi Olímpic Lluis Companys.
The tide, however, turned against them when defender Ronald Araujo was given his marching orders by Romanian referee Istvan Kovacs for a challenge on Bradley Barcola in the 29th minute.
PSG would then find their way back into the tie courtesy of goals from former Barca star Ousmane Dembele and Vitinha, before a double from Kylian Mbappe sent the LALIGA giants crashing out of the competition.
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According to Xavi, the red card changed the complexion of the game, and the decision to show it was a "disaster".
"We are annoyed," Xavi said per ESPN. "The red card marked the tie. We were well organised 11 vs. 11. It completely changed everything.
"For me, it's too much to send [Araujo] off there.
"The referee was really bad. I told him, he was a disaster. He killed the tie.
"I don't like speaking about referees but it has to be said. I don't understand it.
"It's not good going down to 10 players and from that point on, it's another game. For as much as we speak [about the match], the red card marks everything.
"... It's just a shame that the hard work of an entire season ends because of one refereeing decision. I would have liked it to be 11 vs. 11 for the whole game. It's an unnecessary red."
Les Parisiens boss Luis Enrique, meanwhile, did not seem to share the same sentiment as his counterpart on the night.
"I don't speak about referees. I have not seen it back, I just saw it live. In my time as a coach, I have never judged referees. I focus on what I can control," the PSG manager said.
"I honestly think without the red card, we still win, although I can't prove that."
