Barcelona want to add Rafinha in the deal that would see Arsenal defender Hector Bellerin return to his former club.
Marca has claimed that the Brazilian wants to embark on a new experience in the English Premier League and wants to play under Arsenal manager Arsene Wenger.
Bellerin made it clear at the start of the month that not featuring in the Champions League will be a big blow for the North Londoners.
He was also full of praise for his former club.
"You never know what can happen, but I have a contract and when I finish my holidays after the Euros I will have to go back there," he told Mundo Deportivo.
"The truth is that every player of a top level wants to play in the Champions League, especially when I've been playing in it for two years.
"As a team, we didn't achieve qualification and it's something that we want to correct, but as a player, I repeat: it's an important competition.
"It's a great thing to know about the interest of a club like Barca, the club where I grew up. I don't know anything at the moment. I'm an Arsenal player and we'll see what happens."
