Brazilians will also discover whether coach Dunga is prepared to gamble on Santos youngsters Neymar and Paulo Henrique Ganso, who have this year shown the sort of flair which was missing in goalless World Cup qualifying draws at home to Bolivia, Colombia and Venezuela.
Dunga is required only to name a provisional 30-man squad on Tuesday but the gruff former World Cup captain has decided to name his definitive 23 to avoid the speculation which would inevitably follow over who gets dropped.
"I'm ready to go to the World Cup," Ronaldinho, who has scored 13 Serie A goals this season and created another 17, said in a television interview at the weekend. "I know that I'm just one of Dunga's options, but I'm ready."
Dunga, who has made hard work and commitment his watch-words since taking over after the 2006 World Cup, appeared less than enthusiastic when commenting on Ronaldinho's prospects after a 2-0 win over Ireland in a friendly in March.
"He's had his chance for Brazil, now it's up to the coaching staff to make the decision," said the former World Cup captain.
Ronaldinho was one of Brazil's biggest let-downs in 2006, when the five-times champions were knocked out in the quarter-finals by France, although many felt he was played out of position.
"Last time we spoke, he told me that he wasn't going to pick me and then put me on the bench, and he told me to get in shape," said Ronaldinho, FIFA's Player of the Year in 2004 and 2005. "Now, I'm in shape."
Dunga's Brazil have proved deadly when playing a counter-attacking game but many feel that Ronaldinho's inclusion would give them extra options when they have to break down a packed defence, something they have struggled to do.
"It's not pessimism, it's realism," he said. "The fact that they haven't been selected before and that Dunga can't watch them at first hand, could weigh against them."
But he added: "I wouldn't hesitate in telling Dunga that they are ready to play for Brazil."
