Jan Vertonghen's agent is expected to hold further talks with Ajax in a bid to reach an agreement which will allow the defender to join Tottenham Hotspur.
The Belgium international has expressed a desire to leave the Dutch champions in order to finalise a summer move to the Premier League with Spurs.
He has returned to pre-season training while talks continue, but the deal has stalled over a disagreement between the player and Ajax over a clause in his contract which he claims entitles him to 15 per cent of any transfer fee.
The 25-year-old has even suggested he could see out the remaining year of his contract in Amsterdam and leave on a free transfer next summer if a deal is not reached.
A meeting was held with Ajax on Friday morning when Vertonghen's management agency had been optimistic of reaching an agreement.
However, his agent Nakhli Mondial confirmed that the discussions had not been successful and a further round of talks are in the pipeline.
Nakhli said: "We have nothing agreed at this moment.
"The talks were not easy but we are going to try again, maybe on Saturday."
Spurs have already finalised the signing of Icelandic midfielder Gylfi Sigurdsson since the appointment of Andre Villas-Boas as manager and are also closing in on Manchester United youngster Ezekiel Fryers.