Kaka joined AC Milan from Brazilian side Sao Paulo in 2003
AC Milan fans have protested outside the club's headquarters over the possible sale of Brazilian star Kaka to Manchester City in a £100m transfer.
While hundreds of fans blocked a road outside Milan's offices, Kaka's father held a series of talks over the move.
Bosco Leite met Milan vice president Adriano Galliani over his 26-year-old son' future and was due to talk to City's executive chairman Garry Cook.
Earlier, Galliani met Milan owner and Italy Prime Minister Silvio Berlusconi.
City's astonishing bid - £50m more than the current world transfer fee record Real Madrid paid to Juventus to sign Zinedine Zidane in 2001 - has reportedly been accepted.
But City boss Mark Hughes said the club was "a million miles" from sealing the deal, with Kaka said to be undecided, and urged patience as the newly rich Eastlands club attempt to pull off the complex deal.
I don't think he will leave
"The scale is too large and there are too many elements to it," Hughes told BBC Sport. "We're a millions miles away from actually concluding the deal.
"It's not a case of talking to the club, talking to the boy and getting the deal done in 48 hours. You have to give it the time it deserves.
"If we can make it happen, we will do I'm sure because the owners have a real desire to bring the best players in the world to this club," added Hughes, who also stressed Kaka's reported £500,000-a-week wages had not been discussed
Over the weekend Berlusconi admitted the scale of City's offer could make it difficult for the club to keep hold of the Brazilian.
"Nothing has been decided yet, but it's very hard to make someone stay who is going to earn certain figures," he told La Gazzetta dello Sport's website.
£46m Zinedine Zidane (Juventus - Real Madrid), July 2001
£37m Luis Figo (Barcelona - Real Madrid), July 2000
£34m Hernan Jorge Crespo (Parma - Lazio), July 2000
£33m Gianluigi Buffon (Parma - Juventus), July 2001
£32.5m Robinho (Real Madrid - Man City), Aug 2008
£31m Christian Vieri (Lazio - Inter Milan), June 1999
£30.75m Dimitar Berbatov (Tottenham - Manchester United), Aug 2008
Kaka played in Milan's 1-0 win over Fiorentina at the San Siro on Saturday, with the home fans displaying banners such as "Kaka is Priceless" and "Hands Off Kaka", and singing "Don't Sell Kaka".
England international David Beckham, who is currently on loan at Milan from US club LA Galaxy, has predicted the Brazilian would opt to stay at the San Siro.
"I don't think anybody in the dressing room is thinking about how much money they can earn," said the England international.
"It's about playing with the best team, with the best players in the world and winning trophies, and it's not always about money.
"Riccardo doesn't need my advice. He will decide what he wants to do, but he loves Milan. I don't think he will leave."
Kaka joined Serie A giants Milan from Sao Paulo in 2003 and has since won the Italian league title, Champions League and Club World Cup.
The attacking midfielder has scored 86 goals in 244 appearances for Milan. He has also picked up 62 caps for Brazil and scored 23 goals.
Sheikh Mansour bin Zayed Al Nahyan, estimated to be worth £15bn, took over as City owner in September 2008 and extensive funds have been made available to Hughes.
Mark Hughes interview
So far he has secured the services of Wayne Bridge in and Craig Bellamy during the January transfer window.
Kaka is under contract at the San Siro until 2013, and although he stated last February that he wanted to remain at Milan for the rest of his career, he did hint at a desire to play in the Premier League - which he has described as the "best championship in the world".
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