Giulianelli posted the tweet late on Wednesday morning - but, rather than responding with excitement, the Arsenal faithful have reacted with scepticism.
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And that’s probably wise given Real Madrid head coach Rafael Benitez told reporters on Monday that Benzema would be staying at the Bernabeu.
"I think Benzema is going to stay with us,” Benitez was quoted as saying by BBC Sport. “I’m very happy with him."
Denials have not stopped speculation
A day earlier, following Arsenal’s 1-0 victory over Chelsea in the Community Shield at Wembley, Arsenal boss Arsene Wenger denied suggestions that he was pursuing a deal for the France international.
"No, honestly, no,” Wenger said in his post-match press conference. “I don’t know who brings that up."
But that hasn’t stopped the wave of speculation involving Benzema and a potential summer move to the Emirates Stadium.
Arsenal fans react
Real Madrid would be crazy to sell Benzema - right?
That Real Madrid would sanction the sale of Benzema with no replacement lined up would be a huge shock.
However, Benitez has tested Gareth Bale in a central position during pre-season and there is a belief that the Wales international might be more effective for Los Blancos upfront.
Bale himself asked to be moved away from the right flank at the end of last season, concerned he wasn’t seeing enough of the ball out wide, and Benitez has reacted by moving him infield.
Real Madrid have opted against signing another striker following the departure of loan signing Javier Hernandez, although highly-rated 18-year-old Borja Mayoral has been promoted to the first team and will be selected when required by Benitez.
The former Liverpool boss may also still hold hope of convincing Cristiano Ronaldo to become the team’s new striker.
Ronaldo is reluctant to move away from his favoured left wing position because of the space it provides him to work his magic, but clearly possesses the required qualities to make a big impact in that position.
Benzema would be an incredible signing
That Arsenal are keen to sign Benzema comes as no surprise: the 27-year-old is one of the best centre-forwards on the planet.
He would be a significant upgrade on his compatriot Olivier Giroud, who is in danger of losing his first-team place to Theo Walcott, and would help Arsenal in their bid to win both the Premier League and Champions League titles over the next few seasons.
Arsenal fans: will Karim Benzema sign for the Gunners this month? Have your say in the comments below!