Takehiro Tomiyasu and Kai Havertz for Oleksandr Zinchenko (probably the player of the match) and Fabio Vieira.

Source: https://www.theguardian.com/football/live/2023/sep/17/everton-v-arsenal-premier-league-live

The Gunners will arrive on Tyneside without midfielder Mohamed Elneny and defensive duo Takehiro Tomiyasu and William Saliba, with all three players unlikely to feature for the remainder of the season.

Source: https://www.shieldsgazette.com/sport/football/newcastle-united/newcastle-united-v-arsenal-injury-news-with-6-ruled-out-and-3-doubts-for-premier-league-clash-4132032

This would leave Jurrien Timber, Takehiro Tomiyasu at left-back, as Oleksandr Zinchenko is still out injured.

Source: https://www.mirror.co.uk/sport/football/news/arsenal-man-city-community-shield-30630152

With Takehiro Tomiyasu currently injury and set to feature in the Asia Cup early next year, Arsenal also appear to be short of cover in the full-back positions.

Source: https://metro.co.uk/2023/12/20/mikel-arteta-wants-four-new-signings-complete-arsenal-squad-20004517/