Fulham will resist any offer for Willian after Saudi Arabian side Al-Shabab offered to double the player’s wages.
The Brazilian only signed a new one-year contract extension at Craven Cottage earlier this summer after rejecting the chance to join Nottingham Forest.
Willian starred as the Cottagers amassed a record points tally in the Premier League last season but had initially been open to a move to the City Ground.
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The 34-year-old even underwent a medical with Forest, who were offering a two-year deal and increased wages, but opted to return to Fulham after talks with manager Marco Silva.
A lucrative offer from the Saudi Pro League side, however, has now emerged but the west London club will resist any attempts they make to sign the former Chelsea and Arsenal forward.
Fulham have already rejected bids from Al Hilal for forward Aleksandr Mitrovic this summer.
The Serbian international has tried to force that deal through and will seek an alternative move in Europe after indicating he wants to leave the club.