Kaka's switch from AC Milan was announced this week.
"In these moments it is one of the leagues with greater strength and the fact that Kaka wanted to go there and that the league pursued him with such effort signifies that they are doing things very well," said Zico.
Rai, a World Cup winner with Brazil in 1994, said, "For what he represents on and off the field, Kaka is going to have a very positive impact for his new club, Orlando City. As for the US league, I believe he's going in the ideal moment, as much as for his age as for his great experience, and will surely serve to support many good things in MLS."
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