The Catalan club was close to making official the signing of Aubameyang after reaching a deal with the Arsenal striker, but it couldn't get forward Dembélé to leave and will likely have to stay with him until his contract ends in June.
Aubameyang arrived to finalise negotiations with the Catalan club after being stripped of the captaincy at Arsenal for disciplinary reasons, after reportedly being late returning from a personal trip.
Arsenal struck three times inside 35 minutes to beat Tottenham 3-1 on Sunday and move above their north London rivals in the Premier League table
Lacazette's contract is up next year and several clubs including Serie A side Roma and Spanish team Atletico Madrid have been linked with moves for him.
Tattoo artist Alejandro Nicolas Bernal posted the social media clip on 9 February where Aubameyang is seen to get a new tattoo on his hand.
Arsenal have suffered their worst start to a season since the 1974/75 campaign, with just 14 points from as many games, and they are seven points worse off than when they sacked Unai Emery last year
Gabon skipper Pierre-Emerick Aubameyang was sanctioned for posting photos of his teammates who were forced to sleep on the floor while Gabon federation were fined $10,000.
Arsenal boss Mikel Arteta did not reveal if Willian will be dropped for Sunday's Premier League trip to Leeds.
The Gabon squad, including Arsenal star Pierre-Emerick Aubameyang, were forced to sleep on the floor at a Gambian airport before an Africa Cup of Nations qualifier recently.
FA Cup: Pierre-Emerick Aubameyang, Mikel Arteta engineer Manchester City's downfall to secure place in final
In only his 25th match as a manager, Arteta masterminded a 2-0 victory — secured by Pierre-Emerick Aubameyang's double — that ended Manchester City's title defense on Saturday.
Highlights January transfer window, Deadline day updates: Chelsea sign Olivier Giroud; Lucas Moura moves to Tottenham
With an exciting January transfer window just hours from closing, catch all the Deadline Day action here:
The win gives Bayern their first title of the season as the defending champions open the new Bundesliga season on Friday.
"It was a somewhat powerless feeling. We were told by text message by Uefa. They treated it as if a beer can had been thrown at the bus," Tuchel said.
Benfica pulled off a classic smash and grab job as they beat Borussia Dortmund 1-0 in their Champions League last 16 first leg on Tuesday.