New West Ham signing Simone Zaza thought he had a deal to move from Juventus to Napoli, his father has revealed.

The striker is expected to make his debut at home to Watford on Saturday but his father and agent, Antonio, said there was a firm offer from Napoli and that Juve “weren’t keen” to sell him to a Serie A rival.

Zaza has signed an initial loan deal which could develop into a £25million permanent contract.

“There was strong contact with Napoli then we didn’t hear from them and no one explained why,” said Antonio in an interview in Italy.

“Thank God we were spoiled for choice, and there was the important offer from West Ham, a great project. We reached an agreement on everything (with Napoli) and we should have heard from them in a day, two days max but we never heard from them. They disappeared.

“I have no problem in saying that the offer was also very good — €3.5m (£2.9m) plus bonuses.”