The fee that Arsenal would likely get for Koscielny would be minimal, so that shouldn't make a difference in the conversation, this will all come down to Emery.
Arsenal's captain Laurent Koscielny has refused to travel with the team on their preseason tour of the USA.
The 33-year-old has however taken a rather radical route in his attempt to force his exit after failing to show up for the Gunners' US pre-season tour.
"We are very disappointed by Laurent's actions, which are against our clear instructions", a statement on the club's official statement read.
Arsenal are due to play four games while on their tour to the United States.
Arsenal will face Colorado Rapids in a friendly on July 16 before taking on Bayern Munich, Fiorentina and Real Madrid in the International Champions Cup. "We hope to resolve this matter and will not be providing any further comment at this time", the statement continued.
Shokdran Mustafi, Rob Holding, Callum Chambers, Dinos Mavropanos and Sokratis are Arsenal's current options at center back, but there's no doubt Koscielny would have been a starter alongside Sokratis this season.
This stance has clearly angered Koscielny, who believes after nine years of service he deserves to leave on his terms.
It appears there will be opportunities for a number of young players, including new teenage signing Gabriel Martinelli.
They are closing in on the capture of Saint-Etienne's 18-year-old defender William Saliba but that deal is expected to see the teenager return to the Ligue 1 side on loan for the next season.