Spanish outlet sport.es reports that the club are "working on a little investment" ahead of a bigger spell of spending in summer, and Lenglet is among a list of names that could potentially be brought to Tyneside in the New Year.
Newcastle have reportedly already made contact with Barcelona regarding the Frenchman, and the cash-strapped Catalans may be looking to sell a player who has just one start to his name in La Liga this season. But the 26-year-old still has five years left on his contract, meaning he will not come that cheaply.
Lenglet arrived at the Camp Nou in July 2018 after leaving Sevilla for a fee in the region of £32million. He has won three domestic trophies in this time at Barça, including: one La Liga title, a Spanish Cup and a Spanish Super Cup. To date, he has made 137 appearances in all competitions for the club and scored 7 goals.
It has been a poor start to the season for Barcelona, who sit ninth in La Liga with 12 points from 7 games. They have also both of their opening two Champions League group stages matches by a 3-0 scoreline after defeats to Bayern Munich and Benfica respectively.
It has also been a dire beginning to the season for Newcastle, who are still waiting for their first win of the season and sit 19th in the Premier League table.
Lenglet's arrival would bolster a Magpies rearguard that includes Ciaran Clark, Federico Fernández, Fabian Schär and Jamaal Lascelles. The club's defensive record is currently the second worst in the Premier League, with the Magpies shipping in 16 goals in their 7 league fixtures to date.
Newcastle play their first match under the new Saudi PIF-led regime against Tottenham Hotspur at St James' Park on Sunday.
- Newcastle United looking to complete triple signing this month, all from the SAME club
- Barcelona 'in talks' to sign Real Madrid star for first time since 1996
- Ciaran Clark hasn't featured for Newcastle United since he tarnished the club's mid-season tour of Saudi Arabia last January
- Sevilla pull out of deal to sign ex-Arsenal midfielder as medical tests reveal concern