Barcelona believe they'd stand a greater chance of re-signing Neymar from Paris Saint-Germain if they include Philippe Coutinho as a counterweight in the negotiation process, sources told ESPN FC's Moises Llorens and Julien Laurens.
"PSG want Coutinho and have been weighing up (a move) for a while," the high-ranking sources said. "We know that they have consulted his people about the situation. He's a player that has interested them for some time."
PSG would reportedly accept €200 million and Coutinho in exchange for Neymar, but Barcelona could drive down the asking price by offering the Ligue 1 giants an additional player.
Coutinho arrived in Barcelona in January 2018 for an initial €120 million but failed to impress over the following 18 months. The club hopes the 25-year-old has regained some of his transfer value at this summer's Copa America, where he and his native Brazil beat Argentina on Tuesday to reach the final.
Barcelona have apparently been trying to find a way to offload Coutinho for some time.
"He will leave in the summer," a club source told ESPN FC in May.
Barcelona's vice president, Jordi Cardoner, confirmed last week that Neymar wants to return just two years after leaving in a world-record €222-million deal.