Credit: UEFA.A furious Mikel Arteta described Arsenal's defeat against Inter Milan as "very, very difficult to accept" - and said his side should have been awarded a penalty after Mikel Merino was "punched" in the head.Arsenal fell behind on the stroke of half-time when Inter were awarded a contentious penalty after Merino was adjudged to have handled the ball in the area.Merino might count himself unfortunate given he could do little to get out of the way of Mehdi Taremi's flick-on. Hakan Calha

Credit: UEFA.A furious Mikel Arteta described Arsenal's defeat against Inter Milan as "very, very difficult to accept" - and said his side should have been awarded a penalty after Mikel Merino was "punched" in the head.Arsenal fell behind on the stroke of half-time when Inter were awarded a contentious penalty after Merino was adjudged to have handled the ball in the area.Merino might count himself unfortunate given he could do little to get out of the way of Mehdi Taremi's flick-on. Hakan Calhanoglu converted the ensuing spot-kick to send the Gunners to their second defeat in four days.