Ronaldinho unveiled by Flamengo

Ronaldinho has been given a huge Rio de Janeiro welcome after being officially unveiled by new club Flamengo.

More than 20,000 fans, entertained by singers and dancers, swarmed the club's headquarters to greet the gifted, party-loving forward with the toothy grin, who was transferred from AC Milan this week.

Ronaldinho, a World Cup winner with Brazil in 2002, looked overwhelmed by the reception at first but promised the Flamengo supporters titles and told them his goal was to help his country win a sixth World Cup.

"That's my objective. I decided to return to Brazil for that. Many come back to Brazil only to close out their careers," Ronaldinho, decked in the club's red and black colours, said as he spoke to reporters for the first time as a Flamengo player.

"After years away from Brazil, the World Cup and the (2012 London) Olympics have given me motivation to return," added the 30-year-old, overlooked by his country for the 2010 finals in South Africa.

The former Fifa World Player of the Year, who inspired Barcelona to the Champions League title in 2006, signed a four-year contract with Flamengo.

"I want to take the name of Flamengo as high as possible, winning as many titles as possible and repaying these fans' love... I want to give the fans happiness," he said.