Martino wants a new attacking signing made in January and would love to work with fellow Argentine El Kun, says Sport.
Barca have already made contact with Aguero's management team and received a positive response. The striker would love to play with good friend Lionel Messi regularly at club level.
It's been revealed that Aguero's personal adviser. Hernan Reguera, has been living in Barcelona for some months and has held regular meetings with club officials.
Barca want to be sure of Aguero's commitment before approaching City and Reguera has assured them the striker is keen.
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