While Villas-Boas has insisted that no official bids have been made for the 26-year-old, he suggested that one of his key players could exit the French giants over the coming weeks.
Speaking to reporters at a press conference, the Portuguese said: "We'll see. The transfer window is open, Sanson is a player who is highly rated. Officially, we have not received any offers.
"He is a boy who interests English teams because of his characteristics, and it is possible that something could happen."
Sanson, who is valued in the region of £20m, has made 19 appearances for Marseille in all competitions this season.