Arsenal have suffered in front of goal in recent weeks. The Gunners’ lack of cutting edge in the final third has been a huge problem for Mikel Arteta so far this season. The North London outfit have netted just once in their last three outings, across all competitions, with that solitary strike arriving via Gabriel Martinelli at Stamford Bridge on Sunday afternoon. In general, though, Martinelli has struggled to produce end product recently, whilst Gabriel Jesus has been in woeful form in front of goal, and after a bright start to the season, Kai Havertz has started to stutter too. There is ce…