Willian underwent a medical at Nottingham Forest on Thursday night, as talks advance over a deal for the Brazilian, though Fulham have made a rival offer.
The 34-year-old has just had a good year with the Cottagers in West London, aiding their way to a top-half finish with five goals and six assists to his credit.
However, the winger rejected Fulham's initial proposal to remain with the club for another season - and has undergone a medical in the Midlands as he weighs up his options.
He was also spotted at the training ground, as he considered the prospect of a move to the City Ground - which is thought to come with a better offer than that tabled by his former paymasters in SW6.