When Arsenal returned to training on Tuesday their manager had a pick-me-up ready to go. Mikel Arteta’s quirkier motivational methods have achieved renown but this was more straightforward. Where usually the classroom inquest into a weekend game would bring clips of points for improvement, rounded off by reminders of things they had done well, this time the tone was kept entirely positive. The squad had cut dejected figures leaving the Emirates two days previously, Brighton having comprehensively put any remaining title pretensions to bed, and even Arteta had struggled to perform his…
