Pat Rayment has resigned after three years as Spalding United manager.
The shock announcement came this morning with the Tulips currently fourth in the Evo-Stik League First Division South - their highest-ever league position.
Rayment said: “I have tendered my resignation - this has not been a snap decision.
“I have enjoyed three solid years at the football club. I’ve given blood, sweat and tears.
“I want to thank the board members present and past for the backing which they have given me.
“Massive strides have been taken on the pitch. But I still feel there is no structure in place off the pitch.
“This can’t be allowed to go on with the club reaching levels where it has never been before.
“That brings its own challenges. I think there have to be changes but people just don’t want to do that.
“The club have backed me and I’ve been as good to Spalding as they have been good to me.
“They have been absolutely brilliant to me and it’s gone hand in hand.
“We have put the club on the map because three years ago it was a laughing stock.”
It is understood that director of football Bob Don-Duncan, assistant-manager Marcus Ebdon and physiotherapist Sam Seal remain at the Tulips.
They are likely to take charge of tomorrow’s trip to Norton United with the match being played at Newcastle Town’s ground.