London (AFP) – England open their Euro 2020 campaign on a revenge mission against Croatia on Sunday, while Denmark’s team doctor said there was still “no explanation” for Christian Eriksen’s collapse that left the midfielder needing emergency treatment on the pitch.

The Netherlands are back at a major tournament for the first time since 2014 on the third day of action but the coronavirus is causing fresh havoc after Portugal’s Joao Cancelo tested positive.

Eriksen, 29, received CPR as his distraught teammates formed a circle to shield him from the view of 16,000 stunned spectators in Copenhagen’s Parken Stadium on Saturday.

The Group B game — just the third of the month-long tournament, which kicked off a year behind schedule on Friday — was halted just before half-time with the score goalless and suspended for nearly two hours before restarting.

The Finns won 1-0 thanks to a Joel Pohjanpalo header in their first-ever appearance in the European Championship but Eriksen’s plight overshadowed the match.

The Danish Football Union said on Sunday that the Inter Milan midfielder remained in hospital but was in a “stable” condition.

“This morning we have spoken to Christian Eriksen, who has sent his greetings to his teammates. His condition is stable, and he continues to be hospitalised for further examination,” tweeted.

“There’s no explanation so far,” Danish team doctor Morten Boesen told a press conference, adding that all tests done so far on the player, who is still in hospital, have come back fine.

“That is also one of the reasons that he is still in the hospital,” the physician said.

Denmark coach Kasper Hjulmand said he regretted resuming the game.

“I honestly don’t think that we should have been on the pitch again,” Hjulmand told reporters. 

– England expects –

Gareth Southgate’s youthful England side get their challenge under way as they face 2018 World Cup finalists Croatia — who beat England in the semi-finals in Russia —  at Wembley in a 1300 GMT kickoff.

England are playing all three group games at their London home. If they top Group D they will also play there in the last 16, while London is also the venue for both semi-finals as well as the final on July 11.

Centre-forward and captain Harry Kane, who won the Golden Boot at the 2018 World Cup, holds the key to ending England’s 55-year wait for a major trophy.

Southgate has selected one of the youngest and most intriguing squads in the tournament, with the emergence of Phil Foden, Mason Mount and Jude Bellingham heralding a bold new era for the Three Lions.

The England boss believes delaying of the Euros by a year could prove beneficial for his young players, who have gained valuable experience in the past 12 months at club and international level.

“It’s definitely a good thing that a lot of our players have had maybe seven or eight more caps, big matches with their clubs and had that confidence that comes from playing in those big games,” he said.

“Some of them have had great success in those big games as well, which is also an important factor.”

The Netherlands play Ukraine in Amsterdam to open their account, deprived of the services of the long-term injury absentee Virgil van Dijk but still able to call on a wealth of talent including Barcelona midfielder Frenkie de Jong.

Ukraine’s pre-match preparations have been marred by a row with Russia over their jersey that features patriotic slogans and the outline of Ukraine that includes Crimea, which Russia annexed in 2014.

In Sunday’s third match, tiny North Macedonia will make history as they play their first match in a major tournament as an independent nation when they face Austria in Bucharest.

Portugal defender Cancelo has tested positive for Covid-19 and is out of Euro 2020, the defending champions’ federation announced.

Diogo Dalot has replaced the Manchester City right-back in the Portuguese squad, with the titleholders opening their Group F campaign against Hungary in Budapest on Tuesday.

The Russian, Spanish and Swedish squads have also been disrupted by positive tests.

World Cup holders France — with Karim Benzema recalled from a five-and-a-half-year international exile — are the favourites to win the continental crown.

They begin their campaign against Germany in Munich on Tuesday, just after holders Portugal play Hungary in the same Group F.