Alderweireld's current deal expires at the end of this season, leading to intense speculation over his future in North London during the summer with Manchester United heavily linked with a move for the Belgian.
Spurs do have the option to trigger a 12-month extension in the contract which would make Alderweireld available for just £25m during a two-week spell the following summer, but the club are still understood to be hopeful of agreeing fresh terms before that.
The £25m fee would represent a major saving on Tottenham's £65m asking price, but Alderweireld is not considering an extension at this time.
"Honestly, I'm not thinking about it at the moment. I feel good and I'm playing so I'm happy. We'll see what happens," the 29-year-old is quoted as saying by The Mirror.
Alderweireld has made eight appearances for Spurs across all competitions so far this season.