What did Liverpool fan say to piss off Diego Simeone, resulting in red card?

Diego Simeone expressed regret for his confrontation with Liverpool fans during their Champions League match at Anfield, triggered by persistent insults throughout the game. Despite acknowledging his reaction was unjustifiable after Van Dijk’s late winner, Simeone emphasized the relentless abuse he endured from the stands. He hopes Liverpool addresses the behavior and suggested disciplinary action for the fan.