That’s the opinion of Graeme Souness who thinks the Magpies are in real danger of losing the Spaniard.
Newcastle have added the likes of Jacob Murphy, Javier Manquillo, Mikel Merino and Joselu this summer.
But Souness thinks the quality in the squad isn’t close to the level it needs to be to survive in the Premier League.
He said on talkSPORT: “Yeah, definitely. Obviously he is not happy.
“It is hard to speculate because you weren't party to the conversations that took place, but it would appear that he expected to get more and better players in.
“It has not happened and that will frustrate him greatly.
“He has had some big jobs in the past, he has worked with some fabulous players, and he knows with the players he is working with right now that it will be a real big job to keep them in the Premier League this season.”
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Newcastle have started their campaign with two straight defeats to Tottenham and Huddersfield.
Next up for Benitez is a home clash against West Ham on Saturday.
The Hammers have also lost both their opening matches against Manchester United and Southampton.
