The 29-year-old defender has rejected a contract offer from Spurs worth £120k-per-week, which is more than double his current wages.
Alderweireld is a world class player and Mauricio Pochettino has indicated that further talks are expected with the player, who has refused to commit his future at the north London club.
There are no shortage of admirers though for Alderweireld, with several Premier League clubs vying for his signature.
Manchester United are said to be confident of securing a deal in the region of £40 million for the player, while the likes of Chelsea, Barcelona and Paris Saint-Germain are also interested.
Spurs are already looking at a few options with De Ligt being one of their top targets this summer.