He again made his thoughts known this morning, by saying: "I am not happy".
But while Perez is of interest to Newcastle, Benitez says the club will have to sell players before being able to bring in any more signings.
But Benitez is unhappy that other Newcastle targets have been missed although he admitted that it has been hard.
If the answer is no you need to take a long, hard look at yourself.
He could be set to join the plethora of youngsters out on loan from the Premier League champions, with Ruben Loftus-Cheek, Abraham and Izzy Brown among those doing so in the top flight.
But there is real competition from Newcastles Rafael Benitez, who has admitted that he spoke to Arsene Wenger personally about the possible transfer.
"Sometimes they are unavailable, and if they are available, sometimes the wages are not the same, the commission is not the same and the wages are huge". "At the end of last season, Mike Ashley said he would give every penny he had to Rafa".
"I think we will try to do our best in our the market".
The 21-year-old arrived at Chelsea from Brazilian club Fluminense in summer 2015 and instead of becoming another member of the loan brigade from the get-go, he was integrated into the first-team instead.
"It's very hard for me because my Chinese is not good enough", he said, referencing links with the Chinese Super League. "It is something you cannot control but at the moment I am fully committed to do the best that I can".