Arsenal boss Mikel Arteta insists his biggest concern is Pierre-Emerick Aubameyang's alarming slump

Arsenal boss Mikel Arteta insists his biggest concern is Pierre-Emerick Aubameyang's alarming slump.

The Gunners fell to a harrowing 2-1 defeat at home to Wolves in the Premier League on Sunday evening, which marked their fifth loss of the season already after just 10 matches.

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