Barcelona are banned from signing players until January after breaking rules regarding the acquisition of youth players, but they have already reached an agreement with Sevilla over full-back Aleix Vidal.
The ban does not prevent the La Liga giants from conducting incoming or outgoing business, although the players in question cannot be registered to play until the ban is lifted.
Pogba said last week it "would be a dream come true" to play alongside Lionel Messi, as per AS via TEAMtalk, amid reports he was willing to snub interest from the likes of Manchester City to wait for Barcelona.
"It is true that Pogba is a leading target of ours and obviously we are interested, but I can't say anything more," Bartomeu told Telefoot.
"We are forbidden to recruit players until January, so I can't talk about it."
Paul Pogba's agent, Mino Raiola believes a transfer will happen but it won't come cheaply.
"Berlin could be Pogba's last game with Juventus. They don't want to sell him. Whoever wants him will have to buy him," Raiola told Sky Sport Italia.
"However, it could happen. The market is open until September 2. He has a contract with Juventus, who have not made any moves to sell him.
"Concrete offers arrived but they were brushed aside. But the price will be decided by who wants him. The price doesn't matter to someone who wants to buy a work of art.
"Juventus will control the auction but it will be one of the most costly transfers in history. He's a special player. He's already given us a glimpse of the path he's on even though we have not even seen the best of Pogba."
The French midfielder featured in Juventus' Champions League final defeat to Barcelona on Saturday night, but at the age of 22 he will be aiming to reach more finals and come away with the biggest prize in football.
Joining the European champions would certainly help make that happen with arguably the best attack in world football. Lionel Messi, Luis Suarez and Neymar as a trio is too much for any defence to deal with.