UEFA said fans without tickets “could be a problem” for the Europa League final, to be played at Dublin's Aviva Stadium on May 22.
If clubs with larger fan bases reach the final, accommodating supporters “will be very difficult”, general secretary Theodore Theodoridis said.
Liverpool, Rangers and West Ham could all qualify for Friday's quarter-final draw.
In 2022, Uefa apologized After Liverpool fans were corralled and tear gassed before the Champions League final in Paris.
UEFA and French authorities initially blamed the event on fans without tickets.
However, an independent report said UEFA hit back. “First responsibility” Due to chaotic scenes kick-off was delayed by 36 minutes.
There was also Criticism of the 2023 Champions League final With fans in Istanbul reportedly They had to walk long distances along busy roads and queue for hours for transport to and from the stadium, and on June 10, Manchester City beat Inter Milan. It was left without water.
Liverpool and Rangers, who recently reached the European finals, have huge fan bases, with many supporters coming from the Republic of Ireland and Northern Ireland.
West Ham brought around 20,000 fans to Prague in June 2023 for their Europa Conference League final victory against Fiorentina.
“There are some very difficult combinations in terms of finding a way to accommodate everyone who wants to go to Dublin,” Theodoridis said.
“We have booked Croke Park as a viewing venue, but that may not be enough.
“We are working with local authorities and Football Supporters Europe, but the number of supporters without tickets could be an issue.”
UEFA outlines new format for European competitions
Theodoridis, together with UEFA Deputy Director General Giorgio Marchetti, gave an overview of the new format for European competitions that will take effect next season.
All three tournaments will be expanded to 36 teams, with the Champions League and Europa League being played over eight rounds and the European Conference League over six rounds.
Each club plays against different opponents of different criteria based on their coefficient rankings. UEFA has confirmed that all 18 matches in the final round of all three competitions to be held in January 2025 will start at the same time.
UEFA has set aside one “exclusive” week for all three competitions, meaning the opening games of the competition will be spread over 10 midweek weeks instead of the current six.
This includes the three dates on which EFL Cup matches are currently being played, as well as midweek in January, which is used for FA Cup replays.
As part of a wider 'New Deal' with the Premier League, it was expected that the EFL Cup semi-final would return to a single-game format and FA Cup third and fourth round replays would be scrapped, but the Premier League It focuses on providing funding to organizations. pyramid.
but, no agreement has yet been reacheddomestic cup competitions remain unchanged, almost certain to lead to a clash of matches in the European week.
This has happened before, with Manchester City and Liverpool recently playing a Premier League match during a European match week.
But apart from the demands placed on players, this is not an ideal situation for broadcasters.
However, UEFA will likely resist the ultimate move of preventing EFL Cup winners from competing.
“We respect the independence of national associations,” Theodoridis said. “It is not for us to say whether we should hold a One Cup competition or not.
“What we're trying to do is accommodate all teams. We don't want to get involved in domestic issues.”
