Lincoln manager Peter Jackson is to undergo treatment for throat cancer.
Jackson will have treatment next month
Coaches Iffy Onuora and Grant Brown will be placed in caretaker charge when Jackson has radiotherapy next month, reports BBC Radio Lincolnshire.
Jackson said: "It's cancer cells in my throat which have turned to cancer in the last four weeks.
"I'll have to go on a series of lengthy treatments in March. I will be off for one month with maybe two to three weeks recovery after that."
Jackson took over as Imps boss in October last year having previously had two spells in charge of Huddersfield Town.