Another report says Arsenal have continued to improve defensively even without William Saliba. That matters here.
If Arsenal score first, the game may tilt towards territory and pressure. If Chelsea strike early, the contest becomes more open and far less comfortable for the home side.
Without official elevens yet, the important detail is not just who starts, but what each manager prioritises.
Other reports have highlighted the shared coaching roots of Arteta and Alonso, which adds another layer to the tactical contest. Both are modern coaches, but they tend to arrive at control in different ways.
Supporters tracking this one will be waiting for the usual late sequence:
For neutral viewers, that makes this a fixture to monitor from the first whistle rather than wait on the result alone.
Whatever the opening scoreline, the next storyline is obvious: can Arsenal turn defensive consistency into another statement result, or will Chelsea disrupt them and shift the conversation before the final whistle?