"That's news to me," said the last man to lead Dublin to All-Ireland glory, 13 years ago. "I am certainly not involved and I don't know if Brian Mullins is involved. I know he has been asked about it but I don't know what his reply is."
The leading medic stressed that he's "not available" for a management role because of work and other academic commitments that take up a lot of his time. "The same applies to a lot of people who would love to do it but don't have the time," he added.
However, O'Neill confirmed that he has agreed to get involved in a committee searching for a new manager, and he will play a role in the interview process.
O'Neill was a '70s teammate of Mullins but is most revered in Sky Blue circles for managing the county to the summit in 1995, ending a 12-year famine without Sam. He duly stepped down, and Dublin have now gone 13 years without another All-Ireland title.
Most speculation has centred on Mullins, although he has never publicly declared whether he's interested in a return to inter-county management.