He was unveiled at the Nou Camp after passing a medical and putting pen to paper on a four-year deal with the Primera Liga side.
Champions Barcelona produced another sparkling display to crush Racing Santander 4-1 and reclaim top spot in the Primera Liga.
Although Ronaldinho scored a hat-trick in Barcelona's 4-1 victory over Udinese, it was the club's Argentine youngster who attracted the biggest cheer of the night.
The verbal salvo that Frank Rijkaard aimed at Rafa Benitez will add to the highly-charged atmosphere surrounding Barcelona's visit to Liverpool on Tuesday.
Real Zaragoza gained the upper hand in their King's Cup quarter-final against Barcelona when defender Carlos Diogo headed in 12 minutes from time to earn his side a 1-0 win in the first leg at the Nou Camp on Wednesday.
Ronaldinho has agreed initial terms with AC Milan and the Serie A club will now speak to Barcelona about a deal, Milan and the player's agent have said. The 28-year-old Brazilian has had a difficult few months at the Nou Camp because of injury and loss of form and a move has long been mooted. The forward is out for the rest of the campaign with a leg injury and a transfer can not officially go through until the end of the season.
'This is about him. This is a reflection of his personality -- don't give up -- his fighting spirit, every player giving everything'
A solo goal by the Brazilian striker and some outstanding goalkeeping from Iker Casillas earned Real Madrid a 1-1 draw with leaders Barcelona in the Spanish league.
Coach Frank Rijkaard wants Barcelona fans to end hostilities with Chelsea and show sportsmanship and fair play towards the English club.
'That is how it is. How we created the moments was outstanding, how we caused them problems was outstanding, we controlled the game so well'
Ronaldinho led Barcelona to a 3-1 win over Real Zaragoza while Ruud van Nistelrooy scored all four goals in Real Madrid's 4-1 win over Osasuna.
Bayern Munich coach Pep Guardiola says there is no way of stopping Barcelona's Lionel Messi in his present form ahead of their Champions League semi-final clash on Wednesday.
Bayern Munich, Liverpool, PSV Eindhoven and Valencia reached the knockout round of the Champions League with two group matches to spare.
La Liga leaders Barcelona were held to a 2-2 home draw by Celta Vigo on Saturday as their former assistant coach Juan Carlos Unzue dented the title hopes of the Catalans, who dropped points for the second game in a row for the first time this campaign.
Bengaluru now have two draws in a row and their first clean sheet but languish at second-last with just six points.
Paris St Germain's then sports director Leonardo declared the club were ready for tougher competitions in Europe two years ago but Tuesday's Champions League quarter-final exit suggests PSG need more time to reach the top.
The 'Football for Hope' match will feature more than 50 of the world's best known players including Real Madrid's Zinedine Zidane and David Beckham.
Ronaldinho and Andriy Shevchenko will lead two teams on Tuesday in a benefit match to raise funds for victims of the Asian tsunami.
Striker Thierry Henry has admitted he is not performing as well for Barcelona as he did for Arsenal and needs more time to adapt to his Spanish club's style of football.
Barcelona coach Luis Enrique has decided to rest Lionel Messi, Neymar and most of his regulars for the King's Cup last 16, second leg match at Elche later on Thursday.
Barcelona expect AC Milan to go all out for victory at the Nou Camp on Wednesday
Samuel Eto'o scored his 24th goal of the season as Barcelona beat Villarreal 1-0.
The Barcelona striker was fined 12,000 euros for insulting his former club Real Madrid during his team's title celebrations on May 15.
Barcelona were knocked out of the King's Cup after Zaragoza registered a 5-4 aggregate victory.
With Samuel Eto'o on duty at the African Nations Cup, the youngster's electric pace and eye for goal will be crucial to the Catalan side's success.
The Brazilian ace turned in a brilliant display as Barcelona beat Werder Bremen 3-1 to clinch the top spot in the Champions League, Group C.