Football: Arsenal face first big challenge of the season against Villa

Arsenal manager Mikel Arteta has warned his team against complacency as they prepare to face Aston Villa, who defeated them twice last season. Arsenal started this season with a victory over Wolverhampton Wanderers, while Villa also won their opening match. Arteta acknowledged Villa's strengths and praised their coach Unai Emery. Meanwhile, Arsenal has signed defender Riccardo Calafiori, and Arteta hinted at potential further signings, although he did not confirm the recruitment of Mikel Merino or Raheem Sterling. The Gunners aim to improve on last year's performance and avoid a repeat of their setbacks against Villa.