WE ALREADY know there will be one Brazilian team in the final of this year’s Copa Libertadores, thanks to two all-Brazil quarter-finals providing an all-Brazil semi-final. There is no danger of a repeat of last season’s domestic squabble but there are a number of big guns left in the competition, including the 2018 finalists, River Plate and Boca Juniors. The last eight includes four heavyweights from Brazil (Palmeiras, Grêmio, Flamengo and Internacional), the Buenos Aires giants, River and Boca, and two dark horses in Ecuador’s LDU Quito and Cerro Porteño from Paraguay. On first glance, River and Boca are set to meet in the semi-finals, which may provide some headaches for CONMEBOL. Brazil and Argentina have dominated the Libertadores in recent years – in…