With the tournament starting on June 8 in Warsaw, UEFA's operations director for the tournament, Martin Kallen, has voiced concerns over the amount of work still to do.

He told reporters at the International Football Arena conference in Zurich: "There is still major work to be done in the next three to four months, especially in transport, from the airports to the stadiums and to the city centres.

"It will be a different Euro. On the football side, we want it to be on the same level or a little better than Austria-Switzerland in 2008. But it will never be on the same level in terms of transport."

Poland's motorway network remains a problem, with Kallen noting: "They are still building north-south and west-east motorways, and some projects will not be finished.

"You will have to go off the motorway and have to go back on again 10-15km later."

Kallen has been reassured, though, that a key new terminal at Gdansk's Lech Walesa airport will be completed in time after delays, and said: "I had some sleepless nights but it will open in April."

Ukraine, as the second-largest country in Europe, provides a different challenge due to the length of the journeys involved and Kallen admitted: "The worst situation is in Donetsk.

"We are working with Ukraine's deputy prime minister and the mayor of Donetsk to arrange charter flights from Kiev to those matches."