The most obvious candidate who would be available to step in whenever is former Inter Milan boss Antonio Conte.
The Italian head coach was reportedly considered before Real opted to bring in Ancelotti.
But there were seemingly some doubts about Conte’s possible fit at the Bernabeu due to his managerial style.
Most will depend on how Pochettino manages the addition of Lionel Messi at PSG and if he falls short on expectations then the Argentine boss may well face the axe.
Real has long been seen as a dream job for Pochettino, who began his coaching career in Spain at Espanyol.