Arsenal is supposed to be the favourite to beat Chelsea in this weekend meeting. Just that of recent Arsenal's form is beginning to drop, this is seen during their Europa outing with some of the clubs that are not English clubs. Arsenal need to understand that their major target should be English Premier League title and they should do their best to win the title. On a normal Arsenal is supposed to win Chelsea but if Saka will not appear for Arsenal, their chances of winning will be small.
Arsenal in the Premier League are able to play well and can give wins in every game but if we talk about the Europa League then Arsenal don't have a good chance and maybe the fatigue factor of the players can be the cause, but I believe Arsenal are still trying hard to make a win for the fans and Arsenal are still in their best position for the Premier League.
I think not only Arsenal will experience fatigue before facing Chelsea but Chelsea players will also experience it. In the UCL, Chelsea will face Dynamo Zagreb and in the Europa League, Arsenal will face Zurich. so that when the two meet (Arsenal vs Chelsea) then the chances of each player experiencing fatigue are huge. I think the odds of winning for both are 50:50, I will be careful in placing my bets in this match later.