4) Fast Counter Attacks
The Gunners will likely sit back and accept Chelsea will have more of the ball, as they are the home team. However, if the Blues do make mistakes, they need to counter quickly.
In addition to having Martinelli and Pepe, Bukayo Saka could be deployed as one of the wingbacks, preferably on the right so he can go up against Marcos Alonso. Nuno Tavares will also be more comfortable on the left playing further forward so he can make some of his lung-bursting runs.