Brazilian football great Zico wants to run for the presidency of Fifa, even though he believes the odds are stacked against him being elected.
The 62-year-old said: "There's a possibility now for change."
Fifa president Sepp Blatter announced his resignation last week amid investigations by US and Swiss authorities into alleged bribery and corruption involving the 2010, 2018 and 2022 World Cups.
"Of course, changes in the rules of the game would be necessary," Zico (inset right) told reporters announcing his candidacy. "With the rules in place now, there isn't the slightest possibility (of being elected)."
Fifa said earlier that its executive committee would meet next month to choose an election date. Michel Platini, the head of Europe's governing body Uefa, is favourite to get the top job.
A hugely gifted midfielder, Zico played in three World Cups - 1978, 1982 and 1986 - but never won the trophy.