There are 10 Arsenal players who will play in the World Cup and it is difficult to avoid players experiencing injuries in the World Cup, especially if these players are core players who get a lot of playing portions in the national team and this can be detrimental for Arsenal and disrupt what has been built so far, and maybe will be able to change their focus which competition will be the main target.
However, this is not only a worry for Arsenal but many football clubs whose players have to play in the World Cup, which is why this World Cup has received quite a lot of criticism because the schedule which is held in the middle of the season for the big leagues will make players injured and suffer fatigue.
I would hope that they do not get any injuries, they are doing very well right now and anything that could put a stop on their actions would be terrible. However, I am assuming City probably has a lot of players on national teams as well, not sure how many at all, but they are such a good team, they must have a lot.
This means we could end up seeing them injured too, which means if City players are injured and Arsenal players are not, then it could end up with Arsenal actually having a good advantage about this too. That would be quite terrific for them and it would give them a chance to increase the lead over the league and be leaders with a healthy margin thanks to that.