Don't worry, I'm sure Arsenal will win. They've suffered lose streaks, so all the players must be motivated to win especially Crystal Palace is just a mediocre club. Crystal Palace just lost against Everton yesterday, so they should be lack of stamina.
Even though Arsenal's performance is declining, but Crystal Palace is worse than Arsenal. Unfortunately the match is not worth to bet, the odds is too low and it's full of uncertainty.
Given their recent losing streaks—they have lost their last three games in a row and have only won once in their last seven games across all competitions—Arsenal will want to uutilize the break to restart and improve their performance again. To avoid losing the opportunity to compete for the title again this season they would want to win at all costs.
The Premier league is unpredictable, we can witness a shocking performance from Crystal palace and i won't be surprised if this happens. Arsenal just have the advantage of welcoming palace to the Emirates stadium other than that i think their performance will determine the result of the match.