Arsenal suffered defeat on match day four of the Champions League against Inter Milan. Mikel Arteta’s side are in a poor spell of form, with the Gunners’ period of low level performances extending against Inter. The hosts took the lead just before the interval through a Hakan Calhanoglu penalty, a goal that came with great controversy as Mikel Merino conceded the spot kick. Istvan Kovacs’ call wasn’t the only source of frustration at the San Siro, as Arsenal looked far from their best once again. READ MORE: Former Arsenal duo in total agreement over key referee decision vs Inter Milan – they h…