Tottenham have asked Sporting Lisbon to name their price for Ricky van Wolfswinkel.
The Dutch ace was watched by Spurs and Liverpool scouts on Monday night against Benfica.
A Bola says a few hours before the game's kickoff, Spurs representatives held 'exploratory' talks with Sporting officials about a price for Van Wolfswinkel.
Sporting want the bidding to start from €15 million.
