The defensive midfielder has moved to the Portuguese club on a four-year contract.
Nacional have apologised after some of their supporters were filmed making plane gestures towards Chapecoense during a Copa Libertadores match.
FC Dallas signed Paraguayan forward Cristian Colman to a young designated player contract on Thursday.
It has been a long wait, but San Lorenzo of Argentina -- semifinalists in 1960, in the first version of the Copa Libertadores -- have finally won South America's premier club competition.
San Lorenzo of Argentina, Pope Francis' favorite team, defeated Paraguayan side Nacional 1-0 to win the Copa Libertadores title for the first time on Wednesday.
The Argentine Championship kicked off at the weekend -- but San Lorenzo were not in action. Their match against Olimpo was postponed to allow them to prepare for the second, decisive leg of the final of the Copa Libertadores, South America's equivalent of Europe's Champions League.
Some 8,500 San Lorenzo fans travelled to Paraguay to cheer on their team against Nacional in the first leg of the final of the Copa Libertadores, South America's Champions League.
Nacional of Paraguay meet San Lorenzo of Argentina with the first game of a two-legged showdown kicking off this Thursday.
Paraguay's Nacional FC booked their place in the Copa Libertadores final despite losing the second leg of their semi-final against Defensor Sporting 1-0 in Montevideo.
The first legs of the Copa Libertadores semifinals were not short on entertainment, with Nacional and San Lorenzo earning advantages.