By James Cormack A huge London derby beckons for Mikel Arteta, with another defeat potentially seeing the Gunners slip into the bottom half of the Premier League table. It’s been an underwhelming start to Arsenal’s 2024/25 campaign, but there have undeniably been mitigating factors in their faltering opening. Arteta will hope that the return of captain Martin Odegaard from a six-week injury layoff reinvigorates his team from a creative perspective, although the Norwegian is not likely to start on Sunday. Arsenal travel across the capital to face Chelsea with the sole aim of igniting their seas…