Few expected to see the Reds make it to next month’s Madrid finale after a 3-0 first-leg defeat at the Nou Camp, but the five-time European champions will face Ajax or Tottenham after digging deep in stunning fashion.
Liverpool went ahead after just seven minutes through Divock Origi and kicked on in the second half, when substitute Georginio Wijnaldum’s quickfire brace was followed by Origi notching from a quick corner to seal a 4-0 win and progress 4-3 on aggregate.
Asked where this victory ranks, manager Klopp said with a smile: “Top three.
“It’s a special night, very special. Winning against Barcelona is obviously one of the most difficult things in the world of football.
“Winning against Barcelona when you’re 3-0 down, makes it not easier.
“We had to score four goals and was not allowed to concede pretty much.
“We made it more difficult, so we didn’t really think about it to be 100 percent honest.
“We tried to build on the performance in Barcelona and all the good things we did there and try to win the game step by step.
“We attacked with whatever we have and can throw on the pitch.
“That made it a really special game, it made us really difficult to play against tonight.
“What the boys did and that was this mix of again a big heart and football skills. It’s unbelievable.
“But then we know, and we didn’t learn in the first game and we knew it before already, if you have chances, you have to score because otherwise you get punished.
“Tonight we scored, in different ways.
“I said it so often now but the thing that made it really possible—and I said to the boys before ‘I don’t think it’s possible but because it’s you I think we have a chance’—they are really mentality giants. It’s unbelievable.
“After the season we played, the games we had, the injuries we had now in this moment, if you go out there and ask who bet a penny on us, I don’t think you find a lot of people.
“So, and then going out there and putting a performance like this on the pitch is unbelievable.
“I am really proud to be manager of this team. It’s unbelievable what they did tonight. it’s so special.
“I will remember it forever 100 percent because I don’t know if it happened before or it can happen again. I really don’t know. The boys did it, so it was brilliant.”
Klopp hailed Trent Alexander-Arnold’s speed of thought after putting in the corner for the a goal that keeps Liverpool dreaming of two trophies.
Klopp said his players did not want to talk about City’s win against Leicester ahead of Tuesday’s match at Anfield, where they sealed the chance to make amends for last season’s Champions League final loss to Real Madrid.
“The plan was to go to Madrid and get it in there finally,” Klopp said.
“That was the plan actually and now we go there in three weeks’ time. I am really looking forward to that.
“Obviously tonight was really intense and we started without Bobby, Mo and Naby.
“Ox, not available but only we rested him and hopefully he can be an option for the weekend.
“And Hendo got an unbelievable kick against his knee. He didn’t feel his patella—that doesn’t help obliviously in football, in life.
“And Robbo got the heel I think of Suarez against his calf, so you saw both limping.
“Then Virg goes down, then Sadio goes down and you just think ‘OK, it would help if we could finish the game with 11’.
“We will see. We will again try to collect the bones and again go again against Wolves.”
Robertson confirmed he will undergo a scan on Wednesday to determine the extent of his injury.
He told the club’s official website: “It doesn’t feel the best at the minute but I’ll get a scan tomorrow.
“They’re confident that it’s just a nerve or whatever and it can be maybe a couple of days, but we’ll wait and see. We can’t really comment.”