Kaka thrilled with AC Milan form: I'm grateful for second chance
"I still have to improve in some respects, I'm happy because today there has been great improvement. I'll try to get to my best so to have a great World Cup with Brazil.
"I thank Milan for this second chance.
"Yes, it is motivating. When I arrived the first time I was 21, now I'm 31. I'm more a reference for others. There is this responsibility and I take it."
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