Bayer Leverkusen sporting director Rudi Voeller has confirmed the club are negotiating to sell Heung-Min Son to Tottenham Hotspur.
German website Kicker report Voeller stating before the club's Champions League game with Lazio that talks are ongoing.
He said: "It is clear that there is a request, and talks are with Son, but there is nothing definite."
Voeller added Leverkusen are working, "to find an agreement, but 'on our terms.'"
South Korean international Heung-Min Son was not included in Leverkusen's matchday squad, missing due to an illness which kept him out of the weekend's Bundesliga game with Hannover.
Bayer had told the paper in response to the report they were simply focusing on the game, describing it as the biggest of their season.
Son is 23-years-old and The Guardian has reported that a buyout clause in his contract expired in May, meaning Spurs must negotiate a fee. The same paper report he was a target for Liverpool earlier this summer.
More to follow...