The midfielder stayed at Tottenham after catching the eye during pre-season but he has received very few opportunities so far in the ongoing campaign.
He has made just three substitute appearances in the Premier League and his only start came in the EFL Cup this season.
Lo Celso has emerged as a target for Barcelona, who are considering signing him on loan as a replacement for the injured Gavi.
But it has been claimed that Spurs are prepared to knock back any approaches for the Argentinian in the January transfer window.
Spurs boss Ange Postecoglou does not want to weaken his squad in the middle of the season.
Lo Celso is expected to get more opportunities in the coming months due to James Maddison’s injury; he will be out until January.
Tottenham are now ready to dig in their heels and keep the midfielder at the club beyond the January window.
