Unai Emery has a real job on his hands at Arsenal judging by Sunday's 2-0 defeat to reigning champions Manchester City.It was clear at the Emirates Stadium that Arsenal's players were trying to stick to Emery's philosophy of pressing high and playing out from the back.But when Petr Cech tried passing to Shkodran Mustafi, Sokratis Papastathopoulos or Matteo Guendouzi instead of going long, it just wasn't working.Cech misplaced numerous passes that were intercepted by City players or put his own teammates under pressure in dangerous areas.Indeed, on one occasion the 36-year-old almost scored an own goal by screwing a first-time pass to Mustafi that travelled just past the post.Despite Cech's nervousness in possession, Emery plans to keep him as Arsenal's No.1 goalkeeper for the foreseeable future ahead of summer signing Bernd Leno."We want competence with the goalkeepers and all the players in the squad," he said. "The position is the same as the others and there is the same chances for all the goalkeepers.

EMERY PREFERS CECH

"Today, Cech played good and he has this experience of defending our goal. Leno is starting with us.

"He is working very well, he played also well in pre-season, but he can wait for his moment to arrive."

Cech's mistake that almost led to an own goal soon went viral on social media and you can see it in the video below, posted by Arsenal fan @ArsenalTerje.

Terje's tweet quickly racked up thousands of likes and retweets, but he probably wasn't expecting a reply from Bayer Leverkusen, who sold Leno to Arsenal for £19m earlier this summer.

In response to Cech's embarrassing blunder, Bayer's account posted two epic tweets saying: "We might know a guy," and "In case you all were wondering how to play out of the back."

The second tweet had a video attached of Leno comfortably passing into defence last season and starting a goalscoring move.

Perhaps Emery should start thinking about replacing Cech with Leno, who is clearly much more calm and composed in possession.