FIFA's investigatory chamber is appealing the eight-year bans for Sepp Blatter and Michel Platini because they want lifetime bans.
Blatter and Platini were banned from football for eight years last month by FIFA judges, but FIFA investigators want the sanctions to be increased to life bans.
Andreas Bantel, the spokesman for the investigatory chamber of FIFA's ethics committee, said: "We have seven days to appeal to FIFA's Appeal Committee and we are intending to appeal."
Blatter, the FIFA president, and Platini, the UEFA president, were banned for eight years after evidence emerged that Blatter had signed off a £1.3m payment to Platini without a written contract.
FIFA's ethics committee is split into two arms - an investigating arm and a judging arm.
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FIFA's investigators believe the payment was corrupt and recommended life bans. FIFA's judges, though, ruled that there was not enough evidence to prove the payment was a bribe.
Blatter and Platini were found guilty of breaking conflict of interest rules, accepting or offering gifts and acting against FIFA's interests. Blatter was also fined £35,000, while Platini was fined £55,000.
Both men are appealing to FIFA's Appeal Committee. If those appeals fail, they will take their cases to the Court of Arbitration for Sport.
