"Budapest is aiming to host spectators at full capacity, subject to spectators fulfilling strict stadium entry requirements," UEFA said.

UEFA noted that eight host countries have confirmed stadium capacities of between 25% and 100%, "based on their projections of an improved health situation in their countries in June and July due to a number of factors, including a country's vaccination rollout, its planned measures for reopening the economy and the projected slow-down in the virus due to warmer season", and some countries are keeping open the option to potentially raise their capacity.

The association said non-resident ticket holders traveling to Budapest will be required to present proof of negative results from two COVID-19 tests performed in the five days preceding entry into Hungary or a certificate of previous COVID-19 infection valid within six months prior to entry into the country.

Puskás Aréna, a UEFA category 4 stadium that can seat close to 68,000, is scheduled to host four UEFA EURO 2020 matches. They include Group F matches on June 15, 19, and 23 and a Round of 16 match on June 27. The UEFA EURO 2020 was postponed a year because of the pandemic.