The new Athletic Bilbao coach will be former Leeds manager Marcelo Bielsa, or one-time Manchester United target Ernesto Valverde.
The club will hold presidential elections between three candidates on Friday and that will effectively decide who then takes over as coach.
Presidential candidate Ricardo Barkala had sounded out Mauricio Pochettino but the Argentine turned down the opportunity preferring to take a break from management post-PSG. That will only be interrupted if a job at a top club is offered to him.
Barkala has now paired with Valverde who won two leagues and a cup in two seasons with Barcelona.