Blatter was suspended in October for 90 days along with European soccer boss Michel Platini amid a deepening corruption scandal as the sport faces criminal investigations in Switzerland and the United States.
Fifa's Ethics Committee is investigating their conduct and they could face much longer suspensions when the final verdict in the case is announced later this month.
“The week after next, I have the chance to comment,” Blatter told Zurich's Tages-Anzeiger daily. “Then the ethics committee must prove that I have behaved unethically. And one cannot prove what is not true.”
