Arsenal have stripped Pierre-Emerick Aubameyang of the club captaincy following a disciplinary breach last week.
Aubameyang was left out of the squad for Saturday's match against Southampton, and Arsenal confirmed their decision to remove the forward as captain on Tuesday.
The club also said Aubameyang will not be available for selection against West Ham on Wednesday.
"We expect all our players, particularly our captain, to work to the rules and standards we have all set and agreed," the club said in a statement.
Arsenal head coach Mikel Arteta said that the "painful" decision had been made to "defend the interests of the football club".
The Spaniard confirmed that both he and senior club officials had held face-to-face conversations with Aubameyang to inform him of their decision.
