Chris Wilder has resigned as manager of Oxford United and is expected to take over at Northampton Town.
Wilder, whose contract with Oxford was due to end in the summer, is expected to become the new boss of the Cobblers after Oxford rejected an approach to talk to him on Friday.
Wilder's position was put under further scrutiny when he failed to take his usual Friday press conference, sending assistant Mickey Lewis to speak ahead of Saturday's 1-0 League Two win over Torquay.
United chairman Ian Lenagan said on Saturday evening: "My understanding is Chris Wilder has in the last half an hour told the players that he is going and will not be back at Oxford after today.
"That is all I've heard. I'm not sure, I've just looked in his office and he's not there, but it would appear that he has resigned.
"It seems a very peculiar way to do it, but he has told the players. He told me yesterday and the day before that he would resign at the end of the match.
"Chris has done a good job for us and this is a strange way to conclude the matter at the very end.
"But he obviously feels very strongly that with five and a bit months to go on his contract he wants the security of somewhere else and the fact that he probably believes he would get offered the Northampton job has triggered this sequence of events."
Northampton, currently bottom of League 2, have been without a manager since sacking Aidy Boothroyd on December 21, with Andy King taking caretaker charge at Sixfields.
Cobblers chairman David Cardoza said on Monday that he was "talking to one or two people" and "waiting for situations to unfold".
Wilder had been at United since 2008 and was handed a new one-year deal at the end of last season.