Rafinha is yet to feature in LaLiga this season after he twice underwent knee surgery during 2017, although last month he was cleared to return to action.

Rafinha's father, Mazinho, previously indicated the 24 year-old was not interested in leaving Barca, but the club-record signing of Philippe Coutinho from Liverpool could push Rafinha down the Camp Nou pecking order.

Celta sporting director Felipe Minambres confirmed he is keen to take Rafinha - who played for the club on loan in the 2013-14 season - back to Balaidos.

"We are in contact with Rafinha," Minambres said. "There are options and we want to advance them in the coming days."

Denis Suarez is another former Celta player who may be free to leave Barca after the arrival of Coutinho, with the Catalan giant reportedly ready to trim its squad and raise funds after paying a reported £142million fee for the Brazilian.

Minambres thinks a Balaidos return for Suarez, who was on the club's books as a youngster, could be an unrealistic prospect.

"I think it's very complicated," Celta's sporting director said. "They are difficult situations.

"Independent of the Coutinho signing, Denis has a lot of quality and I'm sure he will keep getting minutes at Barcelona."

Barca hosts Celta in the second leg of its last-16 Copa del Rey tie on Friday (AEDT), the teams having drawn 1-1 in last week's opener.