Reigning champion Palmeiras is through to the semi-finals after beating Sao Paulo 3-0 in the second leg on Wednesday (AEST).
Diego Costa will play senior football in Brazil for the first time after reaching an agreement to sign with Atletico Mineiro.
Brazilian champion Flamengo appointed former national team goalkeeper Rogerio Ceni as the club's new coach after the sacking of Domenec Torrent, a long-time assistant to Pep Guardiola.
Domenec Torrent has been sacked by Flamengo after just three months in charge following a 4-0 defeat by title rival Atletico Mineiro.
FIFA has confirmed this month's South American qualifiers for the 2022 FIFA World Cup have been postponed because of the coronavirus outbreak.
River Plate has retained its 2018 Copa Libertadores title after arch-rival Boca Juniors' appeal to have it disqualified was turned down by the Court of Arbitration for Sport (CAS).
Flamengo eased past Barcelona SC 4-0 on aggregate to set up a Copa Libertadores final showdown against Palmeiras.