Anticipating players who are injured because of the tight schedule that must be played by players is the main job of the coach and it is part of the strategy.
Considering that the English Premier League has only arrived on week 7, of course there are many things that must be prepared by Arsenal and other teams that have a schedule to play in the European Champions League and Europa League competitions to maintain the integrity of the team in maintaining the target.
Arsenal have more time to prepare everything before meeting the next match in the Premier League and also in the Europa League. Because there are still ten days from now before playing Tottenham Hotspur at the beginning of next month and Bodoe/Glimt on 7 October. So there is still a lot of time for Arsenal to organize every strategy it needs, because considering that so far Arsenal are still performing very consistently and of course they will always try to be better until the end of this season.