"Now we are not ready. We cannot play tomorrow morning the World Cup because we are still having to work on six stadiums and we have to improve in the six host city stadiums," Valcke said.
Valcke said he wants to avoid the problems faced during the Confederations Cup, when only two of the six stadiums were delivered by the initial deadline set by FIFA.
"Definitely there is still a lot of work to do," he said. "There is a limit of time. There are a few months to go, a few weeks to go to the end of December. (We have to) make sure that we run these test events to avoid the few issues we (faced) at the Confederations Cup with the late delivery of a very few stadiums."
FIFA said tickets sales is already a success.
"A new record," FIFA marketing director Thierry Weil said. "Within seven hours we had more than 1 million requests. We have currently 2.3 million requests after 24 hours of having opened the ticketing site."
Valcke and Brazilian organizers dismissed the possibility that a new wave of protests against the local government — like the one that plagued the Confederations Cup — could disrupt football's showcase next year.
"The protests were at their peak during the Confederations Cup and we still managed to organize the event without major problems," Brazil Sports Minister Aldo Rebelo said. "There is a huge support for the World Cup here and the ticket sales show that, that's the greatest reason for everyone to feel secure. There is nothing to fear when it comes to the World Cup."
SNTV producer Filipe de Almeida contributed to this report from Rio de Janeiro.
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