Rio Ferdinand's latest post about Mikel Arteta has sent Arsenal fans into meltdown after Inter defeat

Rio Ferdinand has sent Arsenal and Manchester United fans wild on social media after a cryptic social media post during Arsenal's clash with Inter Milan.

Ferdinand was on duty for TNT Sport at the San Siro on Wednesday night as Arsenal looked to continue their unbeaten run in this season's Champions League.

Mikel Arteta's side failed to do so, as they fell to a 1-0 defeat to Inter following controversial penalty decisions at each end of the field.

Hakan Çalhanoğlu took responsibility from the spot and made no mistake as his perfect penalty record continued with the Turkish international now 18/18 from 12 yards.

Following the match, Arteta took issue with both penalty decisions.

“But if that is a penalty then the one on Mikel Merino where he punches him in the head has to be a penalty, 1,000 percent. These are the margins in this game and it’s very, very difficult to accept," he said via The Telegraph.

“I am extremely frustrated because these are two decisions that marked the course of the game. Unfortunately, there is nothing we can do. We have to accept it and move on.”

Following Arsenal's defeat, Ferdinand posted a cryptic photo of himself looking through a window at Arteta during the match at San Siro.

And while the former Man Utd star didn't caption the post, Arsenal fans were quick to react.

One fan commented: "Nah he truly has no shame, does he? Content pun mostly Arsenal."

Another added: "What is he doing? We are so rent-free it's ridiculous."

A third replied: "He's f***** weird. Such main character syndrome to make this into a post."

Arsenal fans weren't the only ones to react online, with Manchester United fans finding their former defender's post much more amusing than their London rivals.

One United fan replied: "Have to respect it, he's got the entire Arsenal fanbase on strings."

Another added: "This is a front-row hate watch from Rio, he's living the dream."

A third fan commented: "He didn’t even say a word and a certain fanbase are crying in the quotes."