By Football Italian staff The Rossoneri will pay €35m to purchase Valencia from the Spanish champions in a deal that is worth €40 million, according to reports.
According to La Gazzetta dello Sport, the Giallorossi will receive €5m in cash plus a loan fee of €5.25m.
The deal was reached on Tuesday, and is expected to be completed by Thursday.
Valencia were the holders of the Napoli footballers for three years, but the Gialls finished in the Europa League last season and will be relegated from the Europa Cup.
Valencians head coach Luis Enrique is now the manager of the Catalans, and will have his contract with the Spanish club extended until the end of 2019.