Asia may lose its automatic right to host the 2018 World Cup under a plan being considered by FIFA, its president said on Sunday.
Sepp Blatter said the world governing body was considering scrapping its policy of rotating the tournament between its regions after the 2014 event in South America.
"We haven't yet decided the rotation of the World Cup after 2014," Blatter said.
He added that FIFA's executive committee will make a decision after deciding who will host in 2014.
"There are so many continents in the starting blocks to organize a World Cup in this region and also out of this region," he said.
South Africa are the 2010 hosts, South America will hold it in 2014 but Blatter said the 2018 tournament could be thrown open to worldwide bidding.