Poland are facing a race against time to get their national stadium ready for the 2012 European Championship.
A friendly date with Germany in September has already been switched to Gdansk as a result of the delays.
Fears have now been raised as to whether the ground in Warsaw will be able to host the opening game of Euro 2012.
Construction delays have been a major problem for Poland, who will co-host next summer's tournament with Ukraine.
The event is due to get underway in Warsaw on 8th June, while a semi-final is also set to be staged in the capital.
The opening of the stadium has been delayed, though, and rather than being ready in June, it will now be November at the earliest before the ground is finished.
Works on the Gdansk stadium have also been delayed, but that venue is expected to be ready in time for a friendly meeting with Germany.
"Today we are confident that the September game with Germany will take place in that beautiful stadium," deputy head of PZPN Zdzislaw Krecina said in a statement.