West Ham United have tabled a cash offer for Napoli defender Nikola Maksimovic.
Sky Italia says Napoli are ready to sell with Maksimovic's deal having less than a year to run.
The Hammers have now offered €25m for the defender.
Maksimovic joined Napoli from Torino for €21m in July 2017.
The 28-year-old had spent one season on loan in Naples before making his move permanent and has played 73 games in his four years with the Partenopei.
