#3 Laurent Koscielny
Currently sidelined with an achilles injury that could keep him out of action for another month, Laurent Koscielny could leave Arsenal at the end of the season. He’s made 324 appearances in all competitions but has injury problems that threaten to cut his career short.
The centre-back, who joined from Lorient back in 2010, nearly left the club over the summer when offers from Ligue 1 and the Chinese Super League came his way. If he doesn't believe he'll command a starting place at Arsenal upon his eventual return, an exit from Arsenal might be on the cards. He won't be short of offers.
Koscielny has been injured for five months and might only be eased back this season as Emery won't want to exacerbate his achilles problem. And with the French international's contract expiring next summer, all signs point towards him exiting, as Arsenal aren't close to putting pen to paper on an extension.