Barcelona and Valencia are in negotiations for a direct swap deal for goalkeepers Jasper Cillessen and Neto, report Catalan radio.
RAC1 say the two clubs have held a meeting on Monday morning regarding the move, with both players seemingly open to the deal.
Cillessen, a Dutch international, has a contract at the Camp Nou running through until June 2021 and containing a €60m release clause, while it is believed he wants more first-team football.
The shot-stopper has featured in just 32 games in three seasons at the Camp Nou - of which 24 were in the Copa, with just five in La Liga and three in the Champions League.
The 29-year-old joined Barca from Ajax in 2016 but has struggled to dislodge Marc-Andre Ter Stegen from the number one spot.
Valencia and Benfica have both been heavily linked with a summer move for the shot-stopper and now Los Che are said to be favourites to land his signature.
Neto, 29, moved to the Mestalla from Juventus at the start of the 2017-18 season and the Brazilian international has established himself as first choice at the club under Coach Marcelino.