Jürgen Klopp stressed the need for Liverpool to produce a performance full of quality and heart if they're to reach the Champions League final.

The Reds hold a 2-0 advantage as they head to Spain to take on Villarreal on Tuesday evening in the second leg of the last-four tie. 

Of course not, we know that. It's half-time. In the best possible way, you ignore the result from the first game. If that would be a cup game, only one game and it would be decided and we have to go to Villarreal, we would try to win there – and that's what we want to try there. Knowing that they will go with all they have, it's absolutely clear. 

And it was clear after the game directly with all the things Unai said after the game, the way they set up for the game in La Liga – eight players, I think, they changed in the beginning and the two who started again went off after 45. So, it will be a tough one, but it's fine, really completely fine, because a Champions League semi-final should be tough and that's absolutely OK. We never expected it to be easy. This will not be easy. But we played a good game at home and we better play a good game there as well.

Whatever would be around, good or bad, [a] Champions League semi-final is the most important game you can play – let me say, the second-most important game you can play, maybe the final is more important. But for this moment, it's the most important game you can play and that's why whatever would have happened in the last few weeks, in the next few weeks, that's not important. For this moment, it's clear. 

You never know if you will reach a semi-final again, if we ever have a chance again to go to the final – you never know. We have an exceptional team here and nothing is [taken] for granted, you need luck in these moments, all these kind of things, so you better treat it carefully and be ready – but we will. We will be ready. We really wanted to be where we are and we want to go to the final. But if Villarreal is better than us and beats us with a result which qualifies them for the final, then congratulations and that's it. But between now and then, 95 or whoever knows how many minutes to play. I'm looking forward to it.