Unai Emery won the domestic treble at PSG this season
PSG: Unai Emery attends Ligue 1 trophy ceremony
Cazorla has today confirmed he will leave Arsenal at the end of the season when his contract expires.
As for Emery, he is likely to bring in his own coaching staff, having been axed by PSG at the end of the season.
He guided the French club to the domestic treble this campaign but their failure to win the Champions League cost the ex-Sevilla boss his job.
The 46-year-old joined PSG two years ago after leading Sevilla to a third successive Europa League triumph.
He was kept on at PSG after his first season ended with the club surrendering the Ligue 1 title to Monaco.
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Santi Cazorla has today left Arsenal
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Emery was singled out by Arsenal chief executive Ivan Gazidis, head of football relations Raul Sanllehi and head of recruitment Sven Mislintat.
Arsenal had wanted to get a new manager installed before the World Cup starts.
The transfer window is already open and the Gunners board are keen to get going on deals.
It is understood Emery may be offered a £50million transfer kitty, with Arsenal having twice broken their transfer record over the past 12 months.
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Mikel Arteta will likely remain as a coach of Manchester City
He will have to find some gems instantly
Wright on Emery
Emery was free to spend in Paris, bringing Brazilian sensation Neymar to the Parc des Princes in a staggering £200m deal back in August.
But he may have to tighten his belt a bit in north London.
And Arsenal icon Ian Wright has challenged Emery to get the best out of the squad.
“Emery has had loads of money to spend at Paris Saint-Germain,” he said on 5 Live.
“Now he has to come to Arsenal with £50m with a bunch of players who have been playing in second gear.
“His coaching ability will have to get going instantly and he will have to find some gems instantly.”
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Unai Emery has been challenged to get the most out of his £50m transfer budget at Arsenal
Chris Sutton, reacting to the news, said: “This is out of left field.
“I know some papers have reported it but there doesn’t seem to be any real strategy behind it, in the type they were looking for.
“Were they looking for a defensive-type coach? An Allegri or older-type manager? Or were they looking for a young one?
“They’ve gone middle of the road.
“There hasn’t been decision makers at Arsenal for however many years when Arsene Wenger was there.
“And they’ve made the decision (to axe Wenger) eventually due to the lack of fans in the ground.
“And now… what is the thought process? I’d love them to come out and explain how they have come to this decision.”