Have you checked how Potter did against Arsenal last season
It was either a win or draw for Brighton so Chelsea can not loss here again
Arsenal are hugely supported today, but they will not win
How you can sure Arsenal wouldn't win today? their key players aren't injured, not like Chelsea. The reason why Chelsea is slight favorited because this match will be played on Chelsea's home, but I don't think it's enough to boost the players performance. Based on the line up, Aubameyang will play on center forward, personally Aubameyang prime was already over, that's why Barcelona want to sold him.
Chelsea will find it a bit difficult to win Arsenal in today's meeting in London this is because Arsenal team is in good condition more than Chelsea team.
It is only Saka that is a big player that is injured in Arsenal unlike Chelsea which has been suffering injury from the midfield and defence.
This does not mean that Chelsea does not have chances of winning the match since they want to start their striker Aubameyang they have a very good chances of scoring goal
After I checked on two different sources, it turned out that Bukayo Saka was not injured and indeed, I also saw that in the previous match, Bukayo Saka in the Europa League, Bukayo Saka was replaced with Gabriel Jesus in the 63rd minute.
Indeed, when walking towards the changing room, Bukayo Saka was seen being helped by the medical team by looking like he was limping or holding back pain. But it looks like it's just a minor injury and in this match against Chelsea Bukayo Saka can still play, so the Arsenal squad at this moment are indeed fit.
But unfortunately, for Chelsea there are a few injured players and N'Golo Kante we know N'Golo Kante has a hamstring injury. In fact, according to news circulating N'Golo Kante has been removed from the French squad because he is still injured and also, there are several Chelsea defenders who are also still injured.
Therefore, the Arsenal squad is in a better condition at this moment compared to Chelsea, so at least Arsenal still has a chance to win but that doesn't mean Chelsea will lose easily. Because after all, both of them are top teams who will certainly try not to lose in this match, and so sharing points is not something that is difficult either.