Il Corriere dello Sport says Villa chief Monchi has fielded several approaches for the young Colombian.
However, Villa manager Unai Emery is insisting Duran is not for sale.
He said of Duran earlier this month: "Jhon Duran is young but he has potential.
"We have to work with him, give him chances and minutes to take confidence and build experiences. Every minute he's playing is important for him and he's helping us, like with the goal he scored today."