Diego Costa can’t muster a smile for Chelsea’s new partner (Pic)

It's a given these days that whenever a football club signs a new commercial partnership, its players are gathered around for a photo op.

Some are clearly more enthused by the prospect than others, or are at least better actors, as this Chelsea effort shows. The club has inked a deal with Carabao, a Thai company which produces energy drinks among other products, and John Terry and Willian managed to muster up plenty of passion for the brand. Even Eden Hazard did his best, even though there's a sense he'd have rather been somewhere else. But Diego Costa's expression suggests he was forced to pose for the photo as some kind of bizarre punishment. Knowing Jose Mourinho's unorthodox methods, perhaps he was... https://twitter.com/chelseafc/status/669773455152259072