Sepp Blatter has admitted he is not ruling himself out of seeking re-election as president of football's world governing body.
The 77-year-old resident of Zurich has indicated he would seek a fifth term as head of FIFA if he receives enough backing from the member associations.
Blatter told a radio station in Switzerland: "I'm in good health and I don't see why I should now think about stopping the work.
"If the member associations ask me to be a candidate I would not say 'no'."
Blatter became president in June 1998 when he beat the then boss of UEFA Lennart Johansson.
Since then Blatter has been returned three more times.
His first involvement with FIFA came in 1975 when he became their technical director until 1981, before spending 17 years as general secretary.
The only person to announce he is planning to stand for the presidency is former FIFA deputy-general secretary Jerome Champagne but the Frenchman has admitted he is unlikely to beat Blatter in an election.
UEFA president Michel Platini is considering his options but is almost certain not to challenge Blatter.
Voting for the post of FIFA president takes place next year.