Ian Watmore has resigned from his position as Football Association chief executive just nine months after landing the job.
The 51-year-old moved to the FA from the Department for Innovation, Universities and Skills in June 2009 when he succeeded Brian Barwick.
"Ian Watmore tendered his resignation to me on Friday," FA chairman Lord Triesman said in a statement. "I asked him to reconsider over the weekend. However, he has confirmed today that his position remains unchanged and I have accepted it with great regret.
"There will be a board meeting on Tuesday at noon. I am unable to make any further comment until after that meeting."
When he was appointed last year, Watmore had said: "I'm delighted to be joining the Football Association as chief executive.
"It's a great challenge and one I'm really looking forward to. With Lord Triesman and the board, Fabio Capello and the FA's staff, I want to ensure we're achieving success on and off the pitch across all levels of the game."
No reason has as yet been given for Watmore's shock resignation.