Manchester City came from behind twice to earn a 2-2 draw with Liverpool in a breathless and pulsating Premier League encounter, at Anfield, on Sunday. All four goals came in the second half.
The win allowed second-placed Liverpool to close the gap on league leaders Manchester City to two points.
Klopp and his City counterpart Pep Guardiola were satisfied with their team's displays in a tight, tactical encounter which finished 0-0 at Anfield, but the German was clearly frustrated to now lose his players for international duty.
The first leg, originally scheduled to be held at the Red Bull Arena in Germany, was shifted to Budapest after German authorities denied Liverpool entry into the country due to COVID-19 protocols.
Liverpool held their nerve to win an astonishing penalty shoot-out 11-10 and edge out Chelsea in the English League Cup final on Sunday after a rip-roaring contest had somehow ended 0-0 after extra time at Wembley.
Liverpool will be without forwards Mohamed Salah and Roberto Firmino when they face Barcelona in the second leg of their Champions League semi-final as they look to overturn a 3-0 deficit, manager Juergen Klopp said on Monday.
The league said last week that the deal, called 'Boost La Liga', would strengthen its clubs and give them funds to spend on new infrastructure and modernisation projects as well as increasing how much they could spend on players' salaries.
Liverpool and Manchester United have warned fans that they will be removed from Anfield and could face criminal charges if found engaging in "offensive or discriminatory behaviour" in Monday's Premier League clash.
Chelsea to host Burnley in Premier League season ope
Champions Liverpool suffered a shock 1-0 defeat to lowly Burnley on Thursday, ending their 68 match unbeaten home record in the Premier League as their title defence continued to fade.
Liverpool must take all three points when they welcome newly promoted Bournemouth to Anfield on Monday to keep up their momentum in the Premier League, midfielder Adam Lallana has said.
IMAGES from the English Premier League matches played on Sunday.
Images from the English Premier League matches on Saturday.
Inter, Liverpool sweating on last-16 spots
Liverpool and champions Manchester City drew 0-0 at Anfield while Chelsea and Arsenal enjoyed comfortable away wins. City are top on goal difference from Liverpool and Chelsea with Arsenal two points behind.
Liverpool took the lead against West Ham United but then had to come from behind in another game of thrills and spills for Juergen Klopp's unpredictable side who where held to a 2-2 home draw in the Premier League on Sunday.
Images from the English Premier League matches played on Saturday.
Manchester City's hopes of closing the gap on the Premier League pacesetters were frustrated as they were held to a 1-1 draw at home to lowly West Bromwich Albion on Tuesday.
Real Madrid saw off a stirring Chelsea fightback to book their place in the Champions League semi-finals following a 3-2 defeat after extra time in a scintillating second leg at the Santiago Bernabeu on Tuesday to go through 5-4 on aggregate.
'We have to be hard in the tackles, we have to try to dominate the game and score the goals when we create chances. We will see what happens'
Images from Saturday's action in the Premier League.
'A ridiculous goal conceded from a corner will be the epitaph of this team, which repeated the mistakes of Rome'
'We have to do a lot of self criticism because this is the second time that the same thing has happened to us. We cannot commit the same mistake two years in a row, there are many things we need to consider and think about'
Paris St Germain revived their Champions League campaign with a 2-1 win over Liverpool in Group C on Wednesday, leaving the English club's hopes of reaching the last 16 hanging in the balance.
Steven Gerrard spoke of dread, devastation and defeat on Saturday as the Liverpool captain said farewell to an adoring and emotional Anfield crowd after 17 years and more than 700 appearances.
'Yes, I was sure this was the right decision. We brought Roberto Firmino on for Mo Salah. We could have scored before, we could have scored afterwards, we could have scored all the time. We lived more or less in their box'
Manchester United moved three points clear at the top of the Premier League after a Paul Pogba goal gave them a hard-fought 1-0 win over Burnley at a freezing Turf Moor on Tuesday.
Liverpool frustrated by 10-man Arsenal in League Cup semi stalemate
'The run of titles that we won under Sir Alex, I don't think that's going to be easy for anyone to emulate or copy'
The three Premier League and three La Liga clubs in the last eight avoided each other, with Manchester City up against Atletico Madrid and Liverpool to face Portuguese side Benfica.
A preview of the line-up action in the English Premier League.
Liverpool's Mohamed Salah is willing to put his Champions League ambitions on the back-burner to help the Merseyside club claim their first English league crown in 29 years, the Egyptian forward has said.
Unbeaten Liverpool have 45 points from 17 games with champions Manchester City, who beat Everton 3-1 on Saturday, a point behind.
News of all that's transpired on and off the football field
Spain international goalkeeper Pepe Reina has left Liverpool for a season-long loan at Serie A club Napoli, but said in an open letter to fans of the five-times European champions it was not his decision to leave Anfield.
Images from the English Premier League matches played on Saturday
The match lived up to its billing right from the start
Atalanta's Josip Ilicic and Robin Gosens scored quickfire second-half goals to give them a comfortable 2-0 win over a toothless Liverpool
Liverpool manager Juergen Klopp has urged the club's supporters to celebrate at home as the club prepare to lift the Premier League trophy following their clash with Chelsea on Wednesday. Klopp's Liverpool secured their first top-flight title in 30 years with seven games to spare and will be presented with the trophy on a special podium built on the Kop stand at Anfield.
IMAGES from the English Premier League match played between Arsenal and Chelsea at Emirates Stadium in London on Sunday.