They have refused to speculate on how much it would take to force their hand.
"There has been no contact for him," said Gino Pozzo, son of Udinese owner Giampaolo. "He won't be leaving for now because he is an important element for our project.
"Obviously, we intend to respect the player's desire, but we want him to stay.
"How much would he cost? He doesn't have a valuation."