Arsenal tactics the thin line between linked £27m-rated star becoming a hero or failure

On the surface, an error-prone defender is the last thing Arsenal need. Arsene Wenger takes great pride in the fact the Gunners have recovered the second-most points from losing positions of any Premier League side this season, but there is a very good reason for that – the Gunners have a habit of conceding cheap goals.

So bringing David Luiz, a centre-back famed for complacency in defensive situations even at the age of 30, into a team that already lacks the consistent organisation you’d expect of a top six Premier League side seems somewhat counter-intuitive. But when his qualiti...