Pato arrived last week for a fee of $19.7 million and is the club's second most expensive purchase. The most dear remains Manchester City and Argentina attacker Carlos Tevez, who joined Corinthians from Boca Juniors in 2004 for $22 million, reports Xinhua.
Barcelona midfielder Javier Mascherano joined the same year as Tevez but from River Plate for $9.6 million. He is the fifth most expensive Brazilian transfer.
All deals were done in the last eight years as Corinthians' world stature continues to grow. In 2006, Nilmar joined the club from French champions Lyon for $12.5 million to be the third biggest piece of business.
The only deal not involving Corinthians to make the top five nevertheless involved Paulista clubs. Last September, Paolo Henrique Ganso joined Sao Paulo from Santos for $11.8 million.
The pattern highlights Corinthians' meteoric rise from the second division to world champions in just five years. As the club's marketing efforts carry on reaping huge profits, they could soon overtake Flamengo as Brazil's most well supported and known club.