Arsenal boss Arsene Wenger gave Gallas his best wishes on the move across north London .
Arsenal boss Arsene Wenger intimated his exit was somewhat inevitable following the summer arrival of centre - back Laurent Koscielny from Lorient .
Arsenal boss Arsene Wenger gave Gallas his best wishes on the move across north London , and intimated his exit was somewhat inevitable following the summer arrival of centre - back Laurent Koscielny from Lorient .