The agent of Sporting Lisbon striker Ricky van Wolfswinkel admits new contract talks have stalled.
Van Wolfswinkel is a confirmed target for Manchester United, Liverpool and Tottenham Hotspur.
Louis Laros told Record: "We are waiting for Sporting. There is still no progress in increasing the value of the buy-out clause that the club want to include.
"I have heard rumours in the media about interest in the player from foreign clubs."


