The Argentine playmaker is on loan from Real Betis and Spurs have an option to make the move permanent at the end of this season.
According to reports (via Football London), the Premier League side can save €8m if they move soon.
Betis vice-chairman Jose Catalan has claimed that Spurs will have to pay €40m for the midfielder if they make the Champions League next season. However, a January purchase can be completed for €32m.
It will be interesting to see what Spurs do. If they really see a future with Lo Celso, they should make a move in January and seal the permanent signing.