Arsenal have only scored two goals in their past four games. Contrast that to the eight they got in the previous four and things have dried up.
Gabriel Martinelli is on a barren run, Eddie Nketiah was profligate in front of goal against Manchester City and the midfield appears imbalanced without Thomas Partey. Football is fickle though and Arsenal have been excellent this season; the current run is unlikely to continue.
With Leandro Trossard they have found a viable back-up option on the wings and Emile Smith Rowe's return could see him add extra impetus from deep. The blip could all be forgotten by the end of the weekend.