The Dutchman turned down a move to the Giallorossi this summer, but has struggled to get playing time, following the arrival of Karim Benzema.
“If I continue to be left on the sidelines, I will start looking around at other options,” said the Dutch hitman.
“Roma wanted me and it can be a valid option for January.”
Il Corriere dello Sport reports that Real Madrid president Florentino Perez will hold talks with Roma chief Rosella Sensi this week.