Amsterdam soccer club Ajax has had 11 players tested positive for COVID-19 a day before their Champions League tie against Danish side FC Midtjylland on Tuesday, RTL Nieuws reported on Monday.
European champions Liverpool are second in their Champions League group - a point behind Napoli - and Klopp's side host Genk at Anfield.
Danny Ings gave Southampton a surprise 1-0 home win over Premier League leaders Liverpool.
Ole Gunnar Solskjaer said his team did not show enough quality to get the three points.
Here are five talking points from the weekend's action:
Liverpool added on their website that the furloughed staff would continue to receive 100% of their salaries. Several English top-flight clubs, such as Tottenham Hotspur, Bournemouth and Newcastle United, have already put non-playing staff on furlough, with football's return in England contingent on medical guidance and government support.
IMAGES from the English Premier League matches played on Sunday.
Manchester City shook off the impact of a COVID outbreak in their ranks to outclass Chelsea 3-1 at Stamford Bridge
Manchester City's hopes of remaining in the Premier League title race will hinge on how the defending champions negotiate the next five days with matches against Everton and Chelsea, midfielder Bernardo Silva has said.
Liverpool will resume their quest for a first top-flight title in 30 years against Everton on June 21 but the venue for the behind-closed-doors fixture was not confirmed when the league released its revised fixtures for the season's restart.
The best way for City to defend in the past has been to attack. They have no reason to change that, says Vincent Kompany
Zidane will come up against Guardiola for the first time as a manager when their sides meet in a blockbuster tie in the Champions League last 16 next February.
Phil Foden and Riyad Mahrez scored two goals apiece as the hosts showed their impressive strength
Manchester City manager Pep Guardiola accused Sadio Mane of diving after the Liverpool forward's match-winning display against Aston Villa in the English Premier League.
City are 16 points behind Liverpool - who have a game in hand - and Guardiola said he could not afford to be distracted
'Black lives matter. Black culture matters. Black communities matter. We matter. #justiceforgeorgefloyd #justiceforahmaudarbery #justiceforbreonnataylor.'
Manchester City manager Pep Guardiola has said his job at the English Premier League club may be on the line if they fail to win the Champions League title this season. City have won five major domestic trophies since Guardiola took over in 2016 -- including two Premier League titles and an historic domestic treble last year -- but have never progressed past the quarter-final stage of the Champions League since the Spaniard's arrival.
Rodgers, who took charge in February, has guided Leicester to second in the Premier League on 26 points from 12 games this season, eight points behind leaders Liverpool.
Sergio Aguero believes the 14-point gap between the defending champions and Premier League leaders Liverpool is 'too hard' to overturn
Chelsea went second in the Premier League with a comfortable 4-0 win at Burnley, on Sunday, which maintained their unbeaten start to the season.
Goals from Rodri and Kevin De Bruyne secured a comfortable win at the Etihad
'Why should people think I'm not happy here? Because we lost at Anfield or I've lost three games this season? That's an odd reason to say I'm not happy or satisfied to be here'
A summary of Sunday's action in the Premier League.
The Premier League's 'Project Restart' envisages a return to play in June, once given the green light from government, with the remaining 92 matches held behind closed doors at neutral venues.
Goalkeeper De Gea was forced to leave the field during Spain's Euro 2020 qualifier against Sweden on Tuesday.
Tottenham Hotspur routed Bournemouth 5-0 as they leapfrogged City into second place in the league, six points behind leaders Liverpool who thrashed Newcastle United 4-0.
A round-up of Saturday's action in the Premier League.
Manchester United closed in on the Premier League's pole position after a 2-1 home win over Aston Villa on Friday put them level on points and games played with champions and leaders Liverpool.
Manchester United remain winless at home in the league this season after Arsenal enjoyed their first win at Old Trafford
'I'm probably one of the only ones that disagrees, for the simple fact that we only had three games that we were below standard.'
News of all that's transpired on and off the football field.
Sergio Aguero's hat-trick led Manchester City to a 3-1 win over Arsenal on Sunday and back into second place in the English Premier League, two points behind leaders Liverpool.
Sheffield United players have also agreed to defer wages due to COVID-19 pandemic.
Pep Guardiola said Manchester United's home ground Old Trafford is no longer the fortress it used to be as City look to win all three points and take the lead in the Premier League title race.
Chelsea kept up their pursuit of the Premier League's top three clubs with a 1-0 win away to London rivals Crystal Palace on Sunday, thanks to a strike by N'Golo Kante early in the second half.
Arsenal ended their seven match winless run in the Premier League with a surprise 3-1 London derby victory over Chelsea at the Emirates Stadium on Saturday while Manchester United were held to a 2-2 draw at Leicester City.
Manchester United completed their first home and away Premier League double over Manchester City since the Alex Ferguson era with a 2-0 victory at Old Trafford on Sunday.. Earlier, two goals in each half from a rampant Chelsea earned them a 4-0 victory over Carlo Ancelotti's Everton, cementing their place in the Premier League's top four.
The top three places in the Premier League table look secure for Liverpool, Manchester City and Leicester City, but the fourth spot, currently occupied by Chelsea, remains tantalisingly within reach for several clubs including Carlo Ancelotti's Everton and Ole Gunnar Solskjaer's United.
Premier League leaders Liverpool are helping feed vulnerable and elderly people within the community during the novel coronavirus outbreak with the help of local church members. While, Chelsea will provide 78,000 free meals to Britain's National Health Service and charities that support the elderly and vulnerable during the coronavirus crisis.
Liverpool prevailed to equal the record of 18 consecutive top-flight wins set by Manchester City in 2017.