Tuttosport says Mazzarri has asked Inter president Massimo Moratti to buy Osvaldo, who is available from Roma for €15 million.
The Italy cap has been offered to several Premier League clubs, but no serious offers have arrived from England.
For his part, Osvaldo would prefer to remain in Italy and Mazzarri is convinced the centre-forward would be ideal for his system. But everything depends on Moratti and whether he would be prepared to splash out while he's in sale talks with Indonesian billionaire Erick Thohir.
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