Paris Saint-Germain have announced that Brazilian starlet Lucas Moura is to join the club in January.
Lucas, 19, had attracted attention from Manchester United and Inter Milan before PSG made their move, and a deal reported to be in the region of €45 million is now in place.
A statement on PSG's official website read: "Paris Saint-Germain and Sao Paulo FC have reached today an agreement for the definitive transfer of Lucas Rodriguez Moura Da Silva.
"The player and Paris Saint-Germain have also signed an agreement from January 2013 to July 2017. The player will join Paris Saint-Germain and his new team-mates in January 2013 for the second half of the season 2012-2013.
"By signing a young talent of the quality of Lucas Rodriguez Moura Da Silva, Paris Saint-Germain is already preparing the future."
PSG have invested heavily this summer, with the Lucas deal following the arrivals of stars including Zlatan Ibrahimovic, Thiago Silva and Ezequiel Lavezzi.
Thiago Silva revealed PSG sporting director Leonardo, a former Sao Paulo player, had sought his advice before completing the deal.
The defender told L'Equipe: "Leonardo asked my opinion on Lucas. I told him only good things about him - not because he is my friend by because he has enormous technical quality. I will be happy to have him alongside me at PSG. He will play a big role. He is skilful in front of goal."