FIFA maintained that Dadkan and his board remained the legitimate heads of the federation, and had given Iran until Wednesday to adhere to rules of non-government intervention in football.
But Dadkan told reporters on Sunday he would step aside ahead of the FIFA deadline, which coincides with a home match against South Korea.
“I am just a small part of this great nation. If there is a need for my resignation, consider me to have resigned along with all my previous staff,” said Dadkan.
“I knew that when our games ended in the World Cup they wanted someone to pin the blame on. They also wanted me to change the coaching staff but I said I believed in their ability,” he added.
Following Dadkan’s sacking, Iran’s football federation was taken over by the PEO. The deputy chief of that body, Kiomars Hashemi, was appointed acting head of the federation.