Tottenham have been knocked back with their first bid for Vincent Janssen.
Athletic Bilbao's Carlos Gurpegi in action against AZ Alkmaar's Vincent Janssen
Tottenham Hotspur have finally made a bid to try and sign Vincent Janssen from AZ Alkmaar, report Dutch website AD Sportwereld.
De Telegraaf reported in early June that Janssen and his representatives visited Tottenham for talks, but until now they have yet to make an offer.
Tottenham's bid is reported as the first serious offer AZ Alkmaar have received for Janssen, but they have rejected the bid.
Netherland's Vincent Janssen celebrates
Despite this, AD Sportwereld report that they club concede they will not be able to hold onto Janssen, and are simply holding out for an improved offer.
It is claimed that Tottenham are expected to return 'quickly' with a new bid, in order to see off competing clubs.
German side Wolfsburg are claimed by SkySports to be showing an interest in Janssen, while Voetball Primeur reported a fortnight ago that both Manchester United and West Ham are both keen.
Janssen finished as the top scorer in the Eredivisie last season with 27 goals, and has become a regular for Holland at international level too, netting against England in a friendly in March.
Netherlands' Vincent Janssen in action with England's John Stones