The Italian side have agreed to loan the Portugal worldwide to West Ham for around £1.2million with view to a permanent £26m deal in the summer.
The Portuguese joined the Nerazzurri from Sporting Lisbon in 2016 and has 31 global caps to his name for Portugal.More news: Yvonne Wamalwa - Widow of Former Vice President Kijana Wamalwa, Passes Away
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The energetic midfielder was a €40m signing for the Italian giants after impressing at Euro 2016 and with Sporting in his homeland, but Inter manager Luciano Spalletti has increasingly struggled to find space in his team for the 25-year-old.
Moyes revealed West Ham have received an offer for Ayew, who is a reported target for his former club Swansea. "It is a loan, we Ill be able to tell you more once its done".
Whilst Mario is incoming, West Ham ace Andre Ayew has been linked with a return to Swansea City, and Moyes added that a bid has been remained, but is now unacceptable.
"I've never said we want anyone to go. If someone comes up we will look at it but as far as I am concerned, no one is going".