Substitute Moussa Dembele scored twice as Olympique Lyonnais stunned Manchester City on Saturday to move into the semi-finals of the UEFA Champions League.
Klopp said the upcoming transfer window was likely to be more subdued than in previous years due to the impact of COVID-19 on clubs' finances.
Super sub Eric Maxim Choupo-Moting struck the stoppage-time winner.
Barcelona continued their rampant run of domestic form to beat Osasuna 2-0 away from home on Saturday and move to within two points of La Liga leaders Atletico Madrid, with Lionel Messi setting up goals scored by Jordi Alba and teenager Ilaix Moriba.
UEFA president Aleksander Ceferin said he expected matches to be played without fans, although there was a small chance that could change.
Manchester City's quadruple bid remained intact as Ilkay Gundogan and Kevin de Bruyne secured a 2-0 win at Everton in their FA Cup quarter-final clash
Here are six who could make the biggest impact in this season's English Premier League.
Images from Saturday's action in the Premier League.
A summary of Sunday's action in Serie A and Bundesliga.
News of all that transpired on and off the football field
Levante striker Roger Marti brushed off squandering a penalty to score the winning goal as his side pulled off a shock 2-1 La Liga victory at Real Madrid
Bayer Leverkusen stayed in the hunt for a top-four finish in the Budesliga after two goals by striker Kai Havertz as well as one each by Mitchell Weiser and Kerem Demirbay helped them to a 4-1 win at struggling Werder Bremen on Monday. The result left Bayer fifth on 50 points from 26 games, one behind fourth-placed Leipzig and eight adrift of leaders Bayern Munich. Werder, who suffered a record-extending seventh straight home defeat, stayed 17th on 18 points from 25 matches.
Bundesliga teams will be allowed up to five substitutions per match when it restarts on Saturday after the coronavirus stoppage, while teams will be relegated provided the season is completed, the German Football League (DFL) said on Thursday. Short-term venue changes will also be permitted if health reasons dictate such a need and the season will continue beyond its re-scheduled finish date of June 30 and into July if necessary, the DFL said following a general assembly.
News of all that's transpired on and off the football field.
Twelve months ago Liverpool were ripping up the record books on the way to their first English top-flight title for 30 years but defeat by Everton on Saturday left them mulling a host of far less flattering statistics.
Ousmane Dembele struck early and Lionel Messi converted a late penalty as Barcelona won 2-0 at Juventus in the Champions League on Wednesday after Alvaro Morata had three goals disallowed for offside for the Serie A side.
Philippe Coutinho scored his first league goal since returning to Barcelona to help his side draw 1-1 at home to an excellent Sevilla side in La Liga on Sunday.
Leon Goretzka's 86th minute goal gave Bayern Munich a 2-1 victory over visitors Borussia Moenchengladbach on Saturday, meaning they need to win just one of their last three matches to secure the Bundesliga title.
Thuram, the son of 1998 World Cup winner Lilian Thuram, grabbed his second goal on the hour, tapping in at the far post after Plea threaded another pass through the Union defence.
Thuram, the son of 1998 World Cup winner Lilian Thuram, grabbed his second goal on the hour, tapping in at the far post after Plea threaded another pass through the Union defence.
Soccer in Germany has been suspended for almost a month and the German Football League (DFL) has said the ban will remain in place for the top divisions at least until April 30. Clubs, however, were given the all clear to resume training this week, with champions Bayern Munich deciding to train players in small groups to minimise the risk of infection.
The DFL had last week proposed the extension from April 2 with the country still in lockdown to contain the spread of the virus.
News of all that's transpired on and off the football field.
News of all that tranpired on and off the football field.
The gaze of the sporting world will fall on Germany this weekend as the Bundlesliga becomes the first major soccer league to emerge from the shutdown caused by the coronavirus pandemic. All 18 clubs will crank back into action in what could act as a catalyst for other leagues to follow suit.
The German football body will decide on the criteria for the distribution of the solidarity fund.
The German Football League decided last week to resume the first and second divisions from May 16 after a two-month suspension, with teams undergoing a seven-day isolation period after testing for the new coronavirus.
Guardiola said City had plenty of options, with Gabriel Jesus the only main striker fit and ready but Ilkay Gundogan and Raheem Sterling are able to slot into the role.
The Bundesliga season will restart on May 16 after a suspension of more than two months, the German Football League (DFL) said on Thursday, becoming the first European league to resume amid the coronavirus pandemic. The DFL said the season would restart under the terms of a strict health protocol that bans fans from the stadium, with six games on Saturday, including the high-profile Ruhr valley derby between Borussia Dortmund and Schalke 04.
Napoli brush aside lowly Crotone to go third in Serie A.
Video footage showed Tottenham's Eric Dier climbing over seats and confronting a home fan before he was restrained by security guards and other fans. He was eventually led away.
Unai Emery's Villarreal were much improved in the second half and had spurned numerous chances before Moreno's leveller.
Images from football matches played in the La Liga, Serie A and Bundesliga on Saturday.
Barcelona moved six points clear at the top of La Liga by easing to a 4-0 win at home to Deportivo La Coruna on Sunday with doubles from Luis Suarez and Paulinho ahead of next week's 'Clasico' against champions Real Madrid.
With sports events around the world suspended because of the coronavirus pandemic, football clubs and leagues have been discussing pay cuts with players to help them make it through the crisis.
Barcelona finally made a statement of intent in what has been a chaotic season as they came from behind to beat La Liga leaders Real Sociedad 2-1 at home on Wednesday.
Portugal had to settle for a 0-0 draw at home to Spain in a heavyweight friendly on Wednesday after hammering the crossbar twice and missing a last-gasp open goal.
The result also means second-placed Real Sociedad can reclaim top spot if they beat Eibar on Sunday.
The games sounded more like Sunday kickabouts or high-intensity training sessions than the return to action of highly-paid professionals in the world's best attended football league with normally an average of about 42,000 spectators per game.