It has been claimed that Barca have activated the Frenchman's €35 million (R553 million) release clause after Sevilla refused to negotiate with the Blaugrana.
Lenglet, 23, has signed a five-year deal at the Nou Camp after the Spanish champions met his buy-out clause. The deal with Barcelona also includes a €300m release clause.
The French global joined Sevilla from Nancy in January 2017 and scored four goals in 52 games last season.
Trump reveals Kim Jong-un's letter in tweet
Thursday to discuss returning the remains of American soldiers killed during the 1950-53 Korean War, according to a Yonhap report. " Great progress being made ", Trump tweeted on Thursday along with the letter, calling it a "very nice note from Chairman Kim".
He becomes the fifth centre-back in Barca's first-team squad, but Thomas Vermaelen, Samuel Umtiti and Yerry Mina have all been the subjects of transfer speculation.
Do you think Lenglet will be a success at Barca if he joins?
Barca also now have Thomas Vermaelen and Yerry Mina vying for a place in the middle of the defence, although one of them is likely to leave before the transfer window closes.
Charges against Stormy Daniels dropped
He later tweeted that he expected Daniels to be released on bail "shortly" and charged with a misdemeanour for "touching". But charges were dismissed because she wasn't a regular performer at that establishment - an odd caveat to the law.
North Dakota Tornado Kills Newborn, Injures Dozens
There were no tornado-related fatalities in May and June , the two most active and notorious months for tornadoes in the U.S. Schwartzenberger says his house half a mile from the RV park suffered siding, shingle and hail damage.
Thai Boys Wave to the World in First Video Since Their Rescue
There were several options as to how to save the boys, including keeping them in the cave until the monsoon season was over . The exact mechanics of the rescue bid were closely guarded during the operation, but details have since dribbled out.
Twitter CEO loses 200,000 followers in fake account purge
He lost just 326,118 followers on Thursday, the day before most accounts saw a drop, and on Friday he regained 5,339 followers. The social-media company warned on Wednesday that its crackdown on fake accounts means users will have fewer followers.
Parents of Thai cave rescue boy give thanks to God
Adisak Wongsukchan told Al Jazeera he gave his 14-year-old son Nong Bew a big thumbs up when he first saw him in hospital. The Wild Boars football team which were stuck in Tham Luang Nang Non cave for 18 days after monsoon floods.