Ronaldinho and Andriy Shevchenko will lead two teams on Tuesday in a benefit match to raise funds for victims of the Asian tsunami.
The Brazilian World Cup winner tore a muscle in his right thigh and will almost certainly miss Barcelona's clash with arch rivals Real Madrid.
Barcelona will field dynamic duo Ronaldinho and Thierry Henry in tandem for the first time in the Champions League against Olympique Lyon.
Brazil's preliminary Copa America squad includes Germany's Footballer of the Year Diego of Werder Bremen and Real Madrid forward Robinho.
Ronaldinho has been asked to revert to pre-Barcelona style if he wants to keep his place in the Brazil squad.
Barcelona forward Ronaldinho turned on the style as he steered his side to an emphatic 4-0 win at home Villarreal that put them four points clear at the top of the Primera Liga.
Ronaldinho struck twice as he steered Barcelona to a 3-0 home win over Recreativo Huelva.
World Cup winners Ronaldinho and Kaka were both left out of the Brazil's Confederations Cup squad on Tuesday as coach Luiz Felipe Scolari opted for youth ahead of experience.
Ronaldinho was in inspirational form as he returned to lead Barcelona to a 5-1 home victory over an unfortunate Real Betis in the Primera Liga on Saturday.
Ronaldinho and coach Carlos Alberto Parreira took the brunt of the criticism for Brazil's loss to France
Holders Corinthians slumped to their second consecutive 1-0 defeat in the Brazilian championship, where the highlight of the weekend's matches was a spectacular bicycle kick by Vasco da Gama's Alecsandro.
The Barca striker said he wants to win the Primera Liga, the Champions League, FIFA's player of the year and the Golden Ball
Brazilian football great Ronaldinho and Manchester United legend Ryan Giggs will kick-off Premier Futsal, the world's first multi-national tournament, at the Jawaharlal Nehru Indoor Stadium in Chennai on July 15.
The Brazilian's side beat Andriy Shevchenko's XI 6-3 on Tuesday in a tsunami relief benefit match expected to raise 8 million euros ($10.38 million).
With sublime control, a back heel flick, a pirouette and a sweet volleyed finish, Neymar fashioned a glorious goal at the Nou Camp on Sunday to rekindle memories of Barcelona's greatest Brazilian wizards.
Resurgent Ronaldinho netted a hat-trick to help AC Milan hammer 10-man Siena 4-0 on Sunday and close the gap on Serie A leaders Inter Milan to six points.
The AC Milan striker is likely to step-in for injured Ronaldinho in Brazil's 2006 World Cup qualifier against Peru.\n\n
The Barcelona forward will miss Brazil's WC qualifiers against Peru and Uruguay due to a torn thigh muscle in his right leg.
Francesco Valiani scored a stunning goal as promoted Bologna beat AC Milan 2-1 at the San Siro on Sunday to spoil Ronaldinho's Serie A debut.
Ronaldinho scored twice as Brazil strolled to a 5-0 win over New Zealand at the Olympics on Sunday, while a delightful goal from Ezequiel Lavezzi gave Argentina a late win over stubborn Australia. The wins left the South American pair with 6 points from two games in their respective groups and guaranteed both a quarter-final place with a match to spare.
Ronaldinho said on Friday he was determined to avoid the mistakes of last season and make this one his best at Barcelona.
Atletico Mineiro's 5-2 victory over Arsenal in the Libertadores Cup was marred by fighting between members of the Argentine team and Brazilian military police on the pitch at the end of the match on Wednesday.
Ronaldinho has been told by coach Luiz Felipe Scolari that he must justify his surprise inclusion for Brazil after a one-year absence.
The Barcelona forward's comeback could see Brazil attack with the "three Rs" in the World Cup qualifier against Ecuador.\n\n
A superb header by Ronaldinho spurred AC Milan to a 1-0 over Inter Milan Sunday and hand the Serie A champions their first defeat under new coach Jose Mourinho.
The 23-year-old will inherit the number 10 shirt from the departing Argentine Juan Roman Riquelme.
Barcelona forward Ronaldinho will miss the rest of the season after tearing a muscle in his right leg, the club said in a statement on Friday.
There was no place for AC Milan's Ronaldo in the team for the South American World Cup qualifiers next month.
The Barcelona strikers ended a public spat with a public display of reconciliation.
Barcelona forward Ronaldinho recaptured his form on Sunday when he struck twice to lead his side to a 2-0 win at home to Racing Santander that put them three points clear at the top of the Primera Liga.
The Barcelona playmaker, who has started only once in five internationals since Dunga replaced Carlos Alberto Parreira as Brazil coach in August, is suffering from a calf muscle problem.
Former World Player of the Year Ronaldinho will learn on Tuesday whether or not his impressive season with AC Milan will be enough to earn him a place at his third World Cup.
Barcelona turned on the style to pull three points clear at the top of the Primera Liga with a 2-1 win over Deportivo Coruna on Saturday.
The ever-grinning forward failed to score a goal, restricting himself to his characteristic flicks and shimmies without ever turning them into anything effective.
"This will result will serve to keep our feet on the ground," the Brazilian was quoted as saying.
Ronaldinho scored twice as Barcelona wrapped up their Scottish pre-season tour with a convincing 3-1 win over Hearts before a record 57,857 home crowd on Saturday.