Arsène Wenger, Arsenal’s under-fire manager, is facing a fresh headache over Alexis Sánchez as the forward’s frustration with life at the Emirates increases. Sánchez has two years remaining on his contract but Arsenal may now face a battle to convince him to sign an extension.

Sánchez’s feelings boiled over last week in the victory over Norwich, when he was replaced by Francis Coquelin in the 84th minute. The Daily Telegraph can now reveal Sánchez not only headed straight down the tunnel without acknowledging Wenger, but then stormed out of the stadium.