Chelsea should focus on improving their scoring performance in the Arsenal match. Because it seems like productivity is their main problem at the moment. For three weeks, the number of most goals scored in a match has been only one. Actually they showed big weaknesses in defense against Brighton also but it wasn't a general problem if we take a bigger time period into account.
Honestly speaking , Chelsea really need to work on improving their performance if they want to win this game, Just seem like Didier Drogba position is unreasonable since his departure, Chelsea hasn't gotten a goal scoring striker him , and rarely find Chelsea players making it to the highest goal scorers in the premier league. Arsenal loves scoring goals and could teach Chelsea how to do that , if Chelsea be on laxity.