Exeter City's Supporters' Trust has ordered the club to serve notice on the contract of manager Paul Tisdale.
The Trust, which owns City, approved a motion in October to ask the club's board if Tisdale had a notice period and, if so, serve him that notice.
Tisdale had a two-year rolling contract and is now serving that notice period.
It means that unless a new deal can be reached, Tisdale, who is the longest-serving manager in the EFL, will leave Exeter City in November 2018.
Exeter City say they will not comment on the contractual status of any of their employees, while the Trust chairman Martin Weiler told BBC Sport that "the club are aware of the Trust resolution."
Tisdale is not under any immediate threat of the sack, with the Supporters' Trust saying last month that "members wanted to be satisfied that there was a contract that protected the best interests of the club, the trust and the manager."
It prompted the Trust to issue a statement on the club's form, which read: "Trustees considered letters from a number of members expressing dissatisfaction with current results.
"The Trust Board shares these concerns and stressed the need for improvement to club board chairman Julian Tagg."
He led the club to promotion from the Conference to League Two in 2008 and onto League One the following season, but they dropped back down to the fourth tier in 2012.
Exeter have been owned by their supporters since 2003, when a group of fans bought the club after it had amassed debts of more than £2m after relegation from the Football League.
The Trust has overall control of the club, with a board of directors running Exeter City on a day-to-day basis and a number of Trust members sitting on the club's board.
From exeweb
I think it says the trust board has ordered the club board to "serve notice on his contract"..It doesn't say they have done it, or indeed intend to
The local BBC news program was very clear that he is under notice. With all due respect to others who think differently the whole question of renegotiating his contract is a complete nonsense. Tisdale is under contract for now just a few days under two years. Both parties now have a number of choices Tisdale to work his notice or call it a day (the latter being highly unlikely) the Club to sack him (again highly unlikely) or to bite the bullet and as I have posted earlier offer him a severance deal.
Any question of agreeing the terms of a new contract would not come into consideration until close to the end date of his current contract unless of course he hits the heights again, becomes a target for other Clubs and the CB and TB jointly feel it would be in the Club's best interests to maintain and secure his services.