According to the Chronicle Newcastle follower, Saudi top officials ordered that Isaac would not be allowed to leave if the top forward was not found.
Newcastle United President will attend tonight's match against Liverpool, and the team also held a high-level meeting at St James' Park Stadium. At the meeting, the club proposed to sign Larson for £50 million. The offer has now been rejected by Wolves, but Newcastle is still negotiating with Wolves.
Although no agreement has been reached, negotiations between Newcastle and Wolves have maintained positive momentum. But introducing him was not to replace Isaac.
Newcastle United will see Larson as a replacement for Callum Wilson, who left the club to join West Ham United early this summer.
This means that Isaac will either stay or be sold to Liverpool at the last moment of the transfer window, thereby attracting more funds to bring in a main striker.
Newcastle coach Eddie Hau made it clear at a press conference on Friday that PIF will not allow Newcastle to enter the new season without a core striker, meaning that Isaac's transfer to Liverpool will not be approved unless a replacement is found before the transfer window is closed.