"It shows what we can do" - Klopp warns Real Madrid

Liverpool manager Jurgen Klopp claimed that the 7-0 win against Manchester United "shows" what they are capable of.
"I don't have any words for this", Klopp admitted after getting past United with the largest amount of goal difference in the history of the fixture.
He then continued what he was saying: "It was a spectacular game, fantastic. We played a great game against a team who were very in-form", he added to 'Sky Sports'.
"The start of the second half and the end of the game were very good. This is football and these things can happen. This is the boost we needed and the one we wanted. It puts us in the right direction. Everyone has to know we're here", he highlighted.
Finally, he gave Real Madrid a warning before a possible Champions League come-back: "We haven't shown it for a long time, but this has really shown what we can do and we have to keep playing like this from now on", the German said.