5 things we learned from Arsenal's defeat to Manchester City

#2 Petr Cech must be dropped

Cech watches on as Bernardo Silva doubles City's lead

Playing out from the back is something that most of the Arsenal squad should be expected to understand, given time. But Petr Cech is an old dog, and as such, he will struggle to learn these new tricks. The Man City game showcased some fine saves for the Czech goalkeeper, but also saw him struggling hopelessly to pass out from the back.

The zenith of his performance came when he attempted to play a pass to one of his defenders, and very nearly passed it into his own net, for what would have been one of the most spectacular own goals ever scored.

Bernd Leno was bought to replace the ageing stopper, and on this evidence, he should be brought into the starting eleven as soon as possible.