The young forward – he was 20 years old – shined in the 2003 Campeonato Brasileiro Série A, when São Paulo finished in third place, and in the 2003 Copa Sudamericana, a competition where the club was eliminated in the semifinals, against Argentinian side, River Plate.

In December, Kléber also won the 2003 FIFA U-20 World Cup, along with other future Brazilian soccer stars, such as Nilmar, Dagoberto, Daniel Alves and Jefferson.

[2] In 2008, after four years of playing in Europe, he came back to Brazil, being loaned out to Sociedade Esportiva Palmeiras from FC Dynamo Kyiv.

In his first match for Cruzeiro, De Souza Freitas scored two goals and was dismissed in the first half, playing in the 2009 Copa Libertadores.

In July 2010, after a good season start, scoring two goals in four matches in the 2010 league for Cruzeiro, he agreed a transfer to his former club, Palmeiras, where he had played in 2008.