Steve Clarke is still in pay-off talks with West Ham United.
The London Evening Standard says new Hammers boss Avram Grant is expected to recruit a new assistant manager and a first-team coach to assist him.
It is understood that Zola's No2, former Chelsea coach Clarke, will be leaving the club as soon as a financial settlement can be reached. Clarke was on a salary of £1.2million a year and had two years to run on his contract.
It is understood, though, that first-team coach Kevin Keen will stay at the club.