Botafago tickets Jan 29?

There are 4 of us visiting Rio at the end of this month and we are futebol fans from Seattle. Can anyone give us advice on how we might be able to purchase tickets to the Botofago - Fluminense game?

The Seattle Sounders are playing Botofago in June. We know that Botofago will be a big challenge for the Sounders and we would love to see them play on their home field. We would appreciate any other information that can you share about going to the game.