Arsenal are set to open disciplinary proceedings against Laurent Koscileny, according to
Sky Sports sources.
The 33-year-old refused to join Arsenal on their pre-season tour of the USA.
The defender is eyeing an exit from the Emirates Stadium this summer and wants the Gunners to allow him to leave on a free.
And his decision has been slammed by the club.
In a statement, Arsenal said: “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.”
The 33-year-old captain appeared in 29 games for Arsenal in all competitions last season, starting 24 matches.
In total, the France international has made 255 appearances for Arsenal in the Premier League, scoring 22 goals since joining from French side Lorient for £10m in July 2010.