Nathan Collins admits he is gutted to have left Boston Town.
A back injury suffered in the gym last week has forced him to quit as manager after just 10 months in the job.
Collins is now awaiting an MRI scan to discover the extent of the injury but admits returning to football is the last thing on his mind.
After damaging discs in his back, he may face an operation and insists his family and his carpet cleaning business must take priority.
He said: “I am gutted to have left but I didn’t want to leave the club in limbo.
“I can not drive very far and was not able to attend training last week or Saturday’s match with Harborough.
“I have a young family and they have to take priority, along with my business.
“I was lifting heavy weights and thought at first I may have strained by back but the pain kept me awake and x-rays then confirmed there was damage, but I don’t know the extent of it yet.
“I demand 100 per cent commitment and could not risk all the good work we have done being undone by me being unable to attend training and matches.
“I am gutted to be leaving but I will keep an eye out for the club’s results.”
Former assistant Dan Barrett has taken over from Collins.