Aleksandar Mitrovic has told Fulham he wants to join Saudi Arabia side Al Hilal.
Mitrovic has been offered a chance to triple his £120,000-a-week wages and believes the opportunity is too good to turn down.
His desire to leave Craven Cottage this summer has rocked Fulham, who have made it clear they do not want to lose the 28-year-old striker.
Fulham rejected a second bid from Al Hilal, believed to be worth around £34million, last week but the Saudi Arabian club are set to make a fresh approach.
Mitrovic was Fulham’s top scorer last season, scoring 15 goals in all competitions, and losing him would be a major blow to Cottagers boss Marco Silva.
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Mitrovic is due to fly with the rest of the Fulham squad to Philadelphia this week for their pre-season tour of America.
Al Hilal have already signed his Serbia team-mate Sergej Milinkovic-Savic this summer, along with Kalidou Koulibaly and Ruben Neves for combined fees of almost £100m.
They have targeted Mitrovic after failing in a move to sign Romelu Lukaku from Chelsea.