Atletico Mineiro have a fairly good squad at the moment (with Hulk and Paulinho in the attack) and they have big plans for this season, including the Libertadores Cup, which they won in 2013.
The Libertad are one of the strongest clubs in Paraguay, but they have not had much success on the international stage; their best record in the Libertadores Cup was a semi final, and that was only twice in their history: in 1977 and in 2006.
In this tournament, the home field factor gives them a big advantage, although Atletico Mineiro look the favourites in terms of squad and experience.
Prediction: Atletico Mineiro to win. We recommend the “1 Win” bet, odds 1.53