Soccer: Kakà won't have spell at LA Galaxy
'With us for full two years' says Galliani05 September, 14:57
Denying recent reports of the 'sabbatical', Galliani said the attacking midfielder who returned to Milan on a free transfer from Real Madrid Monday "will be staying with us the full two years".
"Can you imagine what would happen if Ricky left...The fans would come to get us," Galliani said.
Kakà said he had decided to come back after four tough years in Spain to "rediscover the joy of playing" and hopefully cement his place in the Brazil squad for next year's World Cup there.
Milan director Barbara Berlusconi, daughter of club owner Silvio, said Kakà's return "closes a wound". Kakà, 31, moved to Real in 2009 for 68.5 million euros but struggled there, due in part to a spate of injuries.
He scored 70 goals in 193 appearances during his first six-year stint with AC Milan and was inspirational in the club's drive to the 2007 Champions League title.
He also helped the Rossoneri win the 2004 Serie A title in his first season after moving from Sao Paulo for 8.5 million euros.
Kakà, whose real name is Ricardo Izecson dos Santos Leite, took a big pay cut to come back to the club where he got the FIFA World Player of the Year award in 2007.