The Brazil international is full of ambition following his return to the Serie A giants and has set his sights on next year's World Cup
The attacking midfielder scored 95 goals in 270 official appearances for the Rossoneri during his first spell at San Siro from 2003 until 2009 and is determined to complete his century and win back his place in Brazil's national team in the process.
"I promise the utmost effort and one of my objectives is to reach 100 goals for Milan," the 31-year-old told reporters.
"I only need five more and hope to get there soon.
"I am targeting a place at the World Cup with Brazil, but more than anything else I want to do well here."
Kaka could make his first official appearance for Milan since his return on Saturday when Massimiliano Allegri's men travel to Torino.