The Nigerian striker was not in coach Antonio Conte's plans for the edition.
After the transfer window in the five European football leagues ended, Osimheni decided to continue his career in Turkey and joined Galatasaray for a season on loan.
The release clause of Osimheni from Napoli is 80 million euros, and not as it was before, 130 million euros, "Football-Italia" wrote on Wednesday evening.
Napoli transferred Osimheni from Lille in September 2020 for 77.5 million euros, plus other bonuses.
He scored 76 goals and provided 18 assists in 133 official appearances, in all competitions.
The 25-year-old Osimhen has scored 21 goals in 35 appearances for Nigeria.
