Koscielny, 33, stunned the Gunners earlier this month when he refused to travel to America for their pre-season tour.
It is believed the Frenchman is furious with the club he has enjoyed nine years with for denying him the chance to leave this summer.
And a statement released by Arsenal earlier this month read: “Laurent Koscielny has refused to travel to the US for our pre-season tour.
“We are very disappointed by Laurent’s actions, which are against our clear instructions. We hope to resolve this matter and will not be providing any further comment at this time.”
“Senior Arsenal players have been left shocked by the actions of Laurent Koscielny”
According to The Mirror, senior Arsenal players have been left shocked by the actions of their captain.
The centre-back going AWOL has reportedly ‘destabilised the dressing room’, with Gunners stars said to be divided over the situation.
They also go on to claim that the players are desperate to see some new arrivals at the Emirates this summer and fear for their top-four chances without reinforcements.
Two were wrapped up yesterday; teenage defender William Saliba completed his move from Saint-Etienne but will be loaned back to the French club for the 2019/20 campaign, while Spanish midfielder Dani Ceballos joined on loan from Real Madrid amid fierce competition from Tottenham.
The Mirror also report that Koscielny has been telling people at Arsenal’s training ground that his ugly contractual dispute with the club wouldn’t have happened under Arsene Wenger.
With just a year to run on his current deal at the Emirates, the defender will only have to wait six months before he can negotiate a free move abroad.
A number of reports suggest Koscielny is targeting a move back to France, with the likes of Rennes, Lyon and Bordeaux being tipped to sign him.
And Bordeaux boss Paulo Sousa has all but confirmed his side hold on an interest in the Arsenal ace.
“I have already said it, he is not our player,” he told reporters.
“He is a player that every team would like to have because of his experience, the quality of his play and everything that he represents in football.
“We are in the market for central defenders because Jules Koundé has left and so we are looking for another player to replace him. All talks are ongoing but once again he is not our player.
“We are working hard to give ourselves the chance to have a player with his characteristics.”