The Dutchman joined the Cottagers from Besiktas in January and has managed five goals and four assists in 14 Premier League appearances so far.
However, the 33-year-old was unable to prevent Fulham's relegation back to the Championship and looks likely to return to Turkey with title-chasing Galatasaray.
Galatasaray vs. Besiktas
Sunday @ 12:15PM ET
on beIN SPORTS