Will Nwaneri prove a difference-maker?
There were a fair few raised eyebrows when the teamsheets came out at the Emirates before Saturday's win over Nottingham Forest, but Mikel Arteta said afterwards that he made the changes as "the players needed it, so they all feel important that they all have something to give".
Having then swept past a Forest side previously unbeaten away from home this season, the move certainly seemed to work.
With Arteta highlighting the importance of squad strength, you wonder how much of an impact thrilling teenager Ethan Nwaneri might be able to have as the campaign goes on.
His latest eye-catching turn - which included a first Premier League goal for the 17-year-old within minutes of his introduction from the bench - provided the icing on the cake in this one, but he could be the difference-maker in much tighter games in the future.