Sergio Busquets apologised to Barcelona's supporters following its improbable 4-0 Champions League defeat to Liverpool on Tuesday.
The LaLiga champion were red-hot favourite to progress to next month's final in Madrid after a 3-0 win in the first leg last week, only to capitulate at Anfield.
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Divock Origi scored either side of Georginio Wijnaldum's quick-fire brace to dump Ernesto Valverde's side out and evoke painful memories of their 3-0 second-leg defeat to Roma in last season's quarter-final – a result that saw them exit the competition on away goals after taking a 4-1 lead into the fixture in Italy.
Speaking to Movistar, Busquets said: "They have been better than us. I apologise.
"After what happened in Rome, this happened again. It's tough to go out like this after the first-leg result.
"Liverpool have been smarter than us, they were faster. I think we had chances to score the goal we needed, but it wasn't meant to be today."