Five lessons from Arsenal 4-1 Newcastle: Giroud form should worry Welbeck & Bellerin a top prospect

2) Debuchy return huge for Arsenal

Although he played out of position at centre-back, Mathieu Debuchy had a solid game for Arsenal against his old club, showing how much of a boost his return from injury can be for the Gunners. The Frenchman will surely prove a better option covering in the middle than Nacho Monreal, and his presence at right-back would also be a major boost if Wenger chooses to use Calum Chambers in the centre again when he returns from suspension.