Arsenal have now achieved one thing this season that they last managed in 2017 whilst Arsene Wenger was at the helm. Arsenal put their London rivals Chelsea to the sword last night as they recorded a 5-0 win at the Emirates Stadium. This triumph extended the Gunners’ lead at the top of the Premier League table and enhanced their already superior goal difference. Not only were Mikel Arteta’s men able to rack up the goals, but they also kept yet another clean sheet. The North London outfit have now kept 16 clean sheets in the top flight of English football this season, significantly more than an…