Journalist Charles Watts has urged Arsenal to take action this summer to address one squad shortcoming that was obvious against Manchester City. Arsenal lacked an attacking outlet against Manchester City on Sunday. Whilst the Gunners produced a magnificent defensive effort at the Etihad Stadium, when opportunities to spring counter-attacks did arise, the north London club failed to capitalise. There were moments and half-chances, but a lack of pace in the final third cost Mikel Arteta’s side. With Gabriel Martinelli unfit to start due to injury, and Bukayo Saka clearly short of fitness himself…