UEFA is in dialogue with the British Government to ease coronavirus quarantine restrictions on overseas supporters for the knockout stages of Euro 2020.

The UK has the toughest entry requirements of any of the host countries, requiring visitors from amber list countries to quarantine for 10 days on arrival.

Travel between the other host nations – particularly other European Union countries – is largely possible with proof of a recent negative PCR test.

Wembley will host the semi-finals and the final along with two last-16 matches and Euro 2020 tournament director Martin Kallen said talks are ongoing to allow those key matches to be attended by foreign spectators without the need for a lengthy quarantine period.

He told the PA news agency: “We are in a dialogue with the Government, we are looking at what’s possible.

“The Prime Minister and the British Government said the 21st of June would be the date when in principle everything should go back to normal. And if it goes back to normal, what will the rules say for foreigners to come to the UK who are not on a business trip?

“We are in a dialogue and we hope that we can achieve something if the situation allows it, that something could happen on that side.

“Other countries are more flexible, they expect the negative PCR test which is for 72 hours or 48 hours (before arrival) and they come in and out, with the exception of countries that they have put on the red list in their country.

“We are looking at how the situation is moving and what could be achieved.”

“To reach 100 per cent, I could not tell you today if this is possible,” he said.

“We will see on June 21, there are still two-and-a-half weeks (from then) before we have the final, if the situation would allow what the British Government has put on the road map, to reopen and say ‘we are back to normal’, if we are there then maybe the Government will say we can go up to 100 per cent.

“The main criteria is not the stadium, it’s the public transport, because you cannot have the distance between people.

“The London Underground is not yet working at full capacity and that will be the main question, how fast can they come up to 100 per cent capacity. A possible scenario is 50 per cent.”