Blatter denies he will step down early
"The suggestion that I intend to stop my four-year mandate before its end is simply ridiculous," Blatter, 75, said on Twitter on Wednesday.
"The suggestion of a reported 'deal' between me and Michel Platini for the FIFA presidency is pure nonsense."
Blatter was re-elected for a fourth term in June, keeping him in office until 2015. He has said he will not stand again after that.
Former France captain Platini, the UEFA President, is widely seen as a possible successor to the Swiss and his mandate also ends in 2015.