The current favourite in the Premier League sack race is Manchester United's Ole Gunnar Solskjaer 6/1.
But Arsenal have stood firm and, upon their refusal to grant the former France worldwide a free transfer, Koscielny responded by not joining his team-mates in the USA.
Unai Emery is set to strip Koscielny of the captaincy after he turned up at the club's training ground and refused to join the team for their lunch-time flight to Los Angeles.
The defender has made it clear that he wants to leave Arsenal FOR FREE after nine years at the Emirates and is keen to return to his native France.
As far as the club are concerned, this is an episode they really could have done without.
Arsenal also released a statement about the situation. And while they recognise the service he has given they have no intention of letting him leave for nothing while he still has time left on his existing deal. Rob Holding is still recovering from a cruciate ligament injury and will miss the start of the season while Konstantinos Mavropanos is still untried at the highest level.
They may seek to alter the terms of the deal, or target a more experienced defensive reinforcement. Perhaps the reason Arsenal have been unwilling to waive a transfer fee for Koscielny is that he is still a major part of their plans. "It's on Arsenal's side that things are blocked".
Koscielny, who has been with the club since signing from Lorient in 2010, has infuriated a lot of Gunners fans with his actions and the club have even released a statement on the matter. If you're up to challenging the best then play www.fantasy-premier.com now!