renovation of Rio de Janeiro's Maracana stadium ahead of the Confederations Cup.
The Maracana stadium will host three matches during the tournament from June 15-30, including the final - but it is already behind schedule as it was meant to be completed in December.
Valcke is currently visiting Brazil ahead of the nation hosting the Confederations Cup, which is to be used as a rehearsal ahead of 2014's World Cup, and it has been outlined that all six venues now have an April 15 deadline to be ready
Ahead of his trip to the Maracana in Rio, Valcke said: "The city which I will be visiting in two days is the one that worries me the most."
Valcke was, however, impressed by the work being carried out in Recife on the Arena Pernambuco. He added: "We have seen a huge effort to deliver the arena by the end of March. This is great.
"We want Recife to organie test events before the Confederations Cup. It is for the best interest of all, Brazil, the competition and FIFA."
On Tuesday it was announced that obese fans will be offered special tickets at the 2014 World Cup in Brazil.
