Tottenham have been told they must go higher for VfL Wolfsburg defender Micky van de Ven.
TMW says Spurs have offered €30m for the Holland U21 international - which has been turned down.
VfL are prepared to sell Van de Ven for €40m this summer.
Spurs and Van de Ven's agents are also in talks over contract terms, with an initial four-year deal on the table.
Along with the Van de Ven, Spurs are also interested in Wolves defender Max Kilman and Bayer Leverkusen's Piero Hincapie.