Koscielny has sparked outrage amongst Gunners fans by refusing to travel on their pre-season tour of America as he pushes for a move back to France.
And it appears his actions may have also angered some team-mates, after Aubameyang liked a post on Instagram slamming his actions.
The post featured a picture of Koscielny accompanied by a quote from club legend Perry Groves.
The caption read: "'My captain, my a***. I think someone should have a word with him and say Laurent I think you've forgotten your beginnings, I think you've forgotten when you've come from' - Perry Groves on Laurent Koscielny."
— afcSource (@afcSource) July 13, 2019