Edu made his feelings known as Arsenal fell a goal behind against Southampton.
The Gunners technical director could be seen staring down at the Arsenal dugout and shaking his head in sheer frustration.
Arsenal boss Mikel Arteta is under intense pressure in north London, with the Gunners having only won four of 12 Premier League matches this season.
They went into the break a goal behind on Wednesday night, and Edu looked far from impressed at the job Arteta is doing at Arsenal.
Former Gunners striker Kevin Campbell was asked for his thoughts on the Spaniard's reaction, and suggested it's down to Edu not seeing enough grit from the Arsenal players.
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"For me it's the graft, the application," said Campbell on Amazon Prime.
"When you see [James] Ward-Prowse run from the middle of the pitch to close [Pierre-Emerick] Aubameyang down from a right-back spot and then you see Southampton get in behind Arsenal and then the same central midfielders are not doing that, that's what he knows.
"He used to do that, [Patrick] Vieira used to do it. But this Arsenal squad and team don't have that in them."
Arteta led his Arsenal players back out onto the pitch before Southampton on Wednesday night, as he had clearly said all he needed to in the changing room.
He got an instant response, with Aubameyang equalising for the Gunners, much to the delight of his boss.
But a Gabriel Magalhaes red card put Arsenal on the back foot once again, and in the end they did just about enough to hold on to claim a point.
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