Derby always tends to be interesting and the form Chelsea are in right now, a win against Arsenal in London derby will give a big statement to Chelsea fans. Arsenal are certainly favourites but Chelsea shouldn't be underestimated with the squad they have. All it takes is one goal and defend till the end to win the game and if they have a perfect gameplan against Arsenal and execute it well then they also have a chance. However I am rooting in for Arsenal as they have got the lead against City and now we have to perform consistently and we have to win these kind of matches also which are a big hurdle for us in the title race.
This is a derby, that says it all, such matches are always difficult, Arsenal can also score a goal and play well in defense, and if we are talking about defense, Chelsea have conceded only 1 goal in the last 5 matches (if you count the match with Brighton in the FA Cup ), so they can play the match with good defense. Arsenal are the favorites in this match, everyone will agree, but Chelsea can cause them problems.