Craig Armstrong has resigned as joint boss of Blue Square Bet North Eastwood Town, reports BBC Radio Nottingham.
The former Nottingham Forest and Mansfield Town player, 36, became joint boss with Jamie Brough this summer,
But Armstrong, who was released by Forest Green Rovers last summer, has quit and says he is still considering his future as a player.
Former Badgers manager Paul Cox left to take over as boss of Blue Square Bet Premier side Mansfield Town in May.
Eastwood finished fourth in the league last season, but have only won two of their opening eight league games this term.