Newcastle set to 'move on' from Brighton's Anthony Knockaert
Newcastle have already signed eight players this summer, and Newcastle manager Benitez is also looking to add another wide player to his squad.
Championship rivals Brighton, however, do not want to sell the 24-year-old, who is rated in the £10million-bracket.
Asked on BBC Radio Newcastle about Knockaert, Benitez said: "We know that will not be easy.
"It will be tough to convince them. Normally, you try and if you cannot (sign a player), you move on."