Sam Allardyce has agreed to become Everton’s manager, six months after he stepped down at Crystal Palace saying he had “no ambitions to take another job”.

Allardyce is set to become the permanent successor to Ronald Koeman after David Unsworth’s unsuccessful stint as caretaker. His first match will be at home to Huddersfield Town on Saturday. He has agreed an 18-month deal worth a reported £9m.

“Sam Allardyce will be at USM Finch Farm this afternoon to finalise terms on becoming the new manager of Everton Football Club,” read a club statement. “David Unsworth will remain in charge of the Blues for tonight’s Premier League match against West Ham United at Goodison Park.”

He is expected to attend Wednesday evening’s game against West Ham and to be unveiled by the club on Thursday or Friday.