Be a snitch is the message Pele is passing on to Blatter, asking him to give an honest account of his time at FIFA.
Blatter was re-elected as FIFA President back in May, amidst the arrest of 9 past and present officials of the football association.
Blatter subsequently resigned his position as President, but the recent arrest has given cause for concern.
“I was invited to help Fifa, with Franz Beckenbauer, and we worked together for two or three years, so it is very sad when you see what has happened,” Pele told Sky Sports.
“I don’t know exactly what happened, you hear but you do not know, but after what has happened in the last two years, Blatter deserves to be honest and say the truth of what he has seen.”
Among the Fifa officials taken into custody in Zurich earlier this year was former Brazilian Football Federation chief Jose Maria Marin and Pele called on his home nation to get its affairs in order.
“This all happened after the last World Cup, when all Brazilians were very sad [about the national team’s defeat], and then you have our representative in Fifa in this situation,” he added. “So we have to forget the last World Cup and clean up.”