Arsenal's failings remain constant in changed world

Arsenal's Alexandre Lacazette (left) and Manchester City's Rodri battle for the ball during the Premier League match at the Etihad Stadium, Manchester. Picture: Peter Powell/PA Wire/NMC Pool.

Manchester City's Sergio Aguero (centre) sees his shot hit the post leading to Phil Foden (not pictured) to score his side's third goal of the game during the Premier League match at the Etihad Stadium, Manchester. Picture: Peter Powell/PA Wire/NMC Pool.

The whole world changed forever in the 100 days without Premier League football, but Arsenal and error-prone defender David Luiz look frozen in time.