Arsenal are left stunned by the demands of West Ham United for defender Issa Diop.

The Gunners are the latest English side to enquire about Diop, after Manchester United expressed their interest early in the window.

But The Sun reports that West Ham chiefs immediately let Arsenal know that it would cost a massive sum to prize their young defender away.

The Frenchman is valued at a shocking £60 million by the Hammers.

While the young defender does not have the standing in world football to command such a fee, it is a sign that West Ham have no interest in letting him go this summer.