Arsenal have a great opportunity ahead of them tomorrow. If they succeed in defeating Crystal Palace in the away game, then they are going to make the gap with Chelsea only two points. And as of that point, Arsenal would do their best to gain one more position too. We could watch a great competition between them and Chelsea. By the way, Chelsea had a really disappointing game against Brentford in Stamford Bridge. I don't know how they lost it by 1-4. I was speechless after the loss but Rudiger's goal was perfect.
Yes, they have the opportunity to close the gap with Chelsea. Plus they have a greater chance of winning compared to their opponents, Crystal Palace.
Regarding Chelsea surely many people are surprised by what they have achieved, conceding 4 times by only entering 1 goal is a bad form of play. I don't know what happened to them, hopefully they recover quickly because there are still important Champions League games for them.