Italian super agent Antonio Caliendo believes if Manchester United are to sign Kaka, it will more likely be in June than January.

Caliendo feels details for the Real Madrid star's move to England will take time to be ironed out.

"Kaka to Manchester United? Difficult, as you know," said Caliendo, who boasts David Trezeguet (Hercules) and Douglas Maicon (Inter Milan) as clients.

"Some things, when they are so complex, must be prepared in time."

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