Former Chelsea midfielder Oscar is returning to his Brazilian boyhood club Sao Paulo after 14 years, which included a long spell with Shanghai Port in the Chinese Super League (CSL).

Sao Paulo club president Julio Casares posted photos on social media on Tuesday that showed him with the 33-year-old former Brazil international. Casares described the move as "a super transfer."

Minutes later, Oscar thanked the Shanghai Port, where he played for eight seasons, for his time at the CSL club.

"Today I finish a cycle that marked my life forever," he said. "I leave with my heart full of gratitude and pride for everything we achieved together."

Oscar joined Sao Paulo on a free transfer. Neither the Brazilian club nor the player disclosed the duration of their deal, but local media reports said he signed a three-year contract.

Oscar is returning to a club he sued to leave for another Brazilian team, Internacional, in 2010.

In 2012, the midfielder joined Chelsea, and won two Premier League titles and one Europa League trophy with the English club.

Oscar moved to Shanghai in January 2017, and won three CSL titles while becoming a popular fan favorite in Asia. He also played for Brazil at the 2014 FIFA World Cup, and scored the only goal in the host team's 7-1 loss in the semifinals against Germany, who went on to win the tournament.