The player surprised his ex-teammates and manager, Ernesto Valverde, when he visited Barcelona’s training centre.
The 30-year-old sealed a move back to Chinese side, Guangzhou Evergrande, just 11 months after joining Barcelona for €40million.
“I am very happy to return to see my ex-teammates and the staff, we appreciate the people at the club a lot,” Paulinho told Barcelona’s official website.
“Whenever I can, I watched the Blaugrana’s games and they always play well.”
The midfielder also spoke about his compatriots that are currently playing at the Camp Nou.
“I know [Philippe] Coutinho very well from Brazil and Barcelona,” he explained.
“I’m sure Arthur will do very well in this team because of his quality and style of play.
“Malcom is a young player with a bright future ahead of him.”