[4] Juan was due to play in Arsenal's Third Round League Cup tie against Sunderland but picked up a knee injury ahead of the game.
Late in that year he scored one goal in the final of Brazilian Cup against Vasco da Gama and was named "man of the match".
Juan played well once again in the 2008 season, this time winning the Bola de Prata (Silver Ball) award as the best player in his position.
[6] On 22 August 2008, Juan received his first call up to Brazil national team to play against Chile and Bolivia in the qualifying round of the World Cup 2010.
Juan declared that a return to São Paulo, the club where he played as a youth player before joining Arsenal, would be "like moving home.
[11] In February 2012 Juan joined Santos FC on a season long loan after São Paulo signed left back Cortês from Botafogo.
In May 2013, after the reorganisation made by president Juvenal Juvêncio and coach Ney Franco, which got rid of seven players, Juan was reintegrated to Tricolor.
Sei que não estou 100%, que eu posso render mais, mas time grande é assim, tem pressão" ("When we could not win, somebody always is faulted.
He chose the side from Bahia because of Caio Júnior, with whom he worked at CR Flamengo, a period during which Juan made it into the Brazilian team.
[19] Juan debuted in the Brazil national team on 7 September 2008 as a second-half substitute replacing Ronaldinho in the 2010 World Cup Qualifiers 3–0 win over Chile.