Donald Trump's envoy and son-in-law Jared Kushner will visit Israel next week to discuss the US president's Gaza plan recently rejected by Prime Minister Benjamin Netanyahu, officials said on Friday.

Kushner and Nickolay Mladenov, the high representative for Gaza of Trump's so-called Board of Peace implementing the deal, will visit both Israel and key mediator Egypt.

The trip comes after Netanyahu publicly rejected the 15-point plan announced by Mladenov, a Bulgarian diplomat, in which Hamas agreed to hand over its weapons to a new Palestinian governing committee in Gaza.

A Board of Peace official said Kushner and Mladenov hoped for "constructive conversations" on advancing Trump's overall peace plan that began last October with the declaration of a ceasefire. Israel has continued to carry out near daily strikes on Gaza since the ceasefire began.

"The United States and Israel agree on the end state, which is a demilitarised Hamas," the official told AFP on condition of anonymity.