Neto was brought in to provide goalkeeping cover, but Barcelona will start the season without their new signing due to a wrist injury.
Barcelona goalkeeper Neto is facing a spell on the sidelines after fracturing a bone in his left wrist.
The 30-year-old arrived at Camp Nou from Valencia during the close season in a deal worth up to €35million.
With Jasper Cillessen moving the opposite way, Neto was brought in to provide competition for Marc-Andre ter Stegen.
But Ernesto Valverde now faces being without his back-up keeper for the opening stages of the season as he picked up an injury in the final training session ahead of Saturday’s friendly against Napoli.
[LATEST NEWS] Neto has a scaphoid bone fracture
— FC Barcelona (@FCBarcelona) August 11, 2019
Reports in Spain suggest the Brazilian, who featured in Barcelona’s first four pre-season matches, is likely to miss five weeks of action.
The Spanish champions begin their LaLiga campaign with a trip to Athletic Bilbao next Friday and face Real Betis and Osasuna before the end of the month.
Lionel Messi is also doubtful for the start of the season because of a calf strain.