Cooreman led Ocean Boys to win the Nigerian league title last month
Former African champions Enyimba have signed Belgian coach Maurice Cooreman.
Cooreman joins the Nigerian side on a one-year contract.
He takes over from Alphonsus Dike, who was sacked two weeks ago.
Cooreman led Ocean Boys to the Nigerian league title against the odds for the first time in their history last month.
But he turned down the offer to lead the Yenagoa side to the Champions League next year for the two-time African champions
"When a big club like Enyimba come for you, you don't think twice," Cooreman told BBC Sport on Wednesday.
"I have other offers from clubs in Nigeria and South Africa, but once Enyimba called me, I was on top of the world.
"My ambition now is to return Enyimba back to the summit of Nigerian football."
Enyimba won the African Champions League title on 2003 and 2004 but failed to make it past the group stages of this year's competition.
They failed to qualify for the 2007 event after a poor league performance.
Enyimba also crashed out of the Nigerian FA Cup, despite starting as defending champions and favourites to retain the trophy.
Cooreman has worked with several Nigerian clubs including Insurance, Lobi Stars and Gabros.