Visibly overweight after several months sidelined because of injuries and lack of good performances, Ronaldinho is looking to be fit again before signing a deal for next season. He also is likely to be chosen to play for Brazil in the Beijing Olympics, which is just a month away.

"He has been training already," Ronaldinho's agent and brother, Roberto De Assis, was quoted by the O Dia newspaper on Sunday. "But on (July) 10 we will begin his preparation in Porto Alegre."

Ronaldinho will be supervised in the southern Brazilian city by former national team trainer Paulo Paixao, who currently is with Russia's CSKA Moscow.

Assis said it was "natural" for Ronaldinho not to be at his best because he "hasn't played in four months."

The Brazilian star, who last played on March 9, still has a contract with FC Barcelona, but he has been linked with transfers to Manchester City and AC Milan. Assis said earlier this week that Ronaldinho had a 90 percent chance of signing with Milan, where he would join countryman Kaka.

Brazilian football confederation president Ricardo Teixeira said last month that Ronaldinho was expected to be summoned by coach Dunga for the Olympics, the only competition Brazil is yet to win in football.

"He is upbeat, but first we have to know if the club will release him," Assis said. "We will have to wait."

Barcelona sporting director Txiki Begiristain said last month that the club will do all it can to keep Ronaldinho from playing in Beijing.

Barcelona coach Pep Guardiola earlier said that Ronaldinho - along with striker Samuel Eto'o and Portugal midfielder Deco - would play no part in his plans next season.

Ronaldinho helped Brazil win the 2002 World Cup in South Korea and Japan.