Prosecutors said model Najila Trindade did not produce any of the evidence she claimed she had, including a video that allegedly proved the player attacked her.
Neymar left Barcelona to join Paris Saint-Germain for a world record fee of $263 million, but could make a surprise move back to Camp Nou this summer.
Brazil will face either Venezuela or Argentina, for the tournament's semifinals. Brazil had been eliminated by Paraguay the last two times the teams met in the Copa America quarterfinals, in 2011 and 2015, both times in penalty shootouts.
Barcelona Vice President Jordi Cardoner, however, denied the Spanish soccer club was in contact with Neymar amid reports the Brazil striker wants to leave Paris Saint-Germain.
Barcelona's Coutinho scores from the penalty spot early in the second half and added a close-range header three minutes later. Substitute Everton netted a sensational third five minutes from time to clinch a 3-0 victory against Bolivia.
Neymar's representatives have not replied to a request for comment, but his father and agent Neymar dos Santos denied any wrongdoing by the player in a television interview.
A Spanish magistrate, leading an investigation into alleged irregularities in Neymar's move to Barcelona in 2013, said the Brazilian superstar could face up to six years in prison.
The signing of the Ballon d'Or winner and top scorer in the Champions League for the last six seasons represents a major coup for Juventus, who have had a stranglehold on the Italian title since 2012 but have not won Europe's top prize since 1996.
Belgium held off five-time champion Brazil 2-1 on Friday and reached the World Cup semifinals for the first time in 28 years. They will face neighbours France in St Petersburg on Tuesday.
Neymar scored a stylish opener and set up substitute Roberto Firmino for a late second as Brazil cruised into the quarter-finals of the World Cup with a 2-0 win over Mexico on Monday.
Paris Saint Germain won France's Ligue 1 title, five weeks before the league ends after a 7-1 lopsided victory against defending champion Monaco at the Parc des Princes in Paris.
Brazil and Paris Saint-Germain superstar Neymar is undergoing an operation for a broken right foot, which left the most expensive footballer in the world out of action ahead of the World Cup finals.
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