Chelsea vs Arsenal will end for the favour of Chelsea because, they are good in using home to challenge their opponent which they have proven it during their first game that made them to draw the game with Liverpool which they can still fall back to such tactics to frustrate Arsenal strength in this game. Arsenal will be the one looking for draw game which Chelsea will not allow it to happen than to use the right players to make the game difficult for Arsenal from the beginning to the end to achieve the winning goal 1:0 for the favour of Chelsea.
You can never tell who will win tomorrow's match, and Chelsea playing at home did not mean anything to Arsenal because Arsenal have been winning them at Stamford Bridge. If you go through the statistics of their last five matches, you will see that Arsenal won four while Chelsea won only one. Meanwhile, two of these four matches Arsenal won were at the Stamford Bridge; therefore, Chelsea playing at home tomorrow will not stop them from losing if they didn't perform very well in the game.
Just because it is a home match for Chelsea doesn't mean it is a winning match for Chelsea. Of late Chelsea haven't been winning their home match. Only this beginning of the season alone, Chelsea lost their home match to Nottm Forrest and Aston Villa.
Therefore, you are not to use a home match to give in favor of Chelsea when playing against Arsenal. Arsenal is in a better position to win against Chelsea even if it is a home match for Chelsea. I give the 3-point win to Arsenal, whether it is a home or away match for them.
Tomorrow's match will be a dramatic match because Chelsea team has started recovering from their poor start lately, and Arsenal also won their last match which is one of the most difficult match for them that is their win against Manchester City; this shows that Arsenal are capable of winning any team that come their way in the Premier League.