Part of the justification for Arsenal's £260 million spending spree was to add squad depth so they could avoid a repeat of last season's injury-ravaged campaign. Saturday's 5-0 demolition of Leeds United was a demonstration of the feel-good factor that outlay has created, but it also served as a warning that this deeper pool of options could be tested much sooner than the club hoped.
The positives at Emirates Stadium were numerous and began before a ball was kicked. Eberechi Eze was unveiled 15 minutes before the start as Arsenal's seventh summer signing after joining the club he supported as a boy from Crystal Palace for £67.