If I had to choose the lineup for Arsenal against Chelsea I would make 4 changes with Bernd Leno going in goal, Stephan Lichtsteiner coming in at LB as I don’t think Nacho Monreal is ready yet. Torreira coming in for Granit Xhaka for obvious reasons and Lacazette replacing Aaron Ramsey who as I had said earlier is clearly unfit and I don’t see why we should continue to risk an aggravation of his calf problem yet it was evident against City that he is not fit. Aubameyang would go wide (though I wouldn’t want him to) and Mesut Ozil would take up his natural no.10 role. Just my thoughts.

Image source - https://www.bbc.com/sport/football/45181273

But I doubt Unai Emery will do it because he likes Petr Cech and Bernd Leno is gonna be on the bench and Lacazette is so good but won’t get started and he will come on as a sub but we need his start. Did u see how much better arsenal was when he and Torreira came on? Chelsea are quite strong team & Arsenal need to be best at their formation and tactis. This would be an interesting match to watch. I am eager what Emery is planning to do against Chelsea. Looking forward to this match.