The Football Association says it remains confident the new Wembley Stadium will be ready for the 2006 FA Cup final.
The new Wembley as it will look when it is completed
The project has been troubled by delays and is £75m over budget, and builders Multiplex says there is a risk it may not be ready for the game on 13 May.
"We are assured they are on schedule to hand over the stadium on 31 March," said FA spokesman Adrian Bevington.
"We are continuing to work towards playing the Cup Final there on 13 May."
Bevington admitted the FA had booked Cardiff's Millennium Stadium as a back-up venue.
"There is a critical construction plan in place, as you would expect, and that is being followed," he said.
"There is certainly no fresh concern or panic at the FA in light of the statement issued to the Australian stock exchange overnight."
Hungary, who became the first non-British team to win at Wembley when they beat England 6-3 in 1953, could be the opposition for England's first game at the new stadium, on 30 May.
Hungarian Football Federation president Imre Bozoky says they have been invited to play, but Bevington said nothing was set in stone yet.
"No agreement has been signed but we have been involved in discussions with the Hungarian FA with a view to playing them in one of our World Cup preparation games," he said.
"We will confirm that once we are in a position to do so. We hope to be in a position by the end of the week to announce our full programme prior to the World Cup."