Arsenal striker Kai Havertz has suffered a worrying injury scare on the club’s training trip to Dubai.
Mail Sport understands the Germany international suffered the issue during a session earlier this week.
Sources have indicated the problem is hamstring related, though the precise diagnosis remains unconfirmed.
The club will confirm the extent of the issue in due course, but any hamstring injury will likely result in Havertz spending time on the sidelines.
Mikel Arteta will hope any absence is minimal with his squad already depleted in attacking areas with Bukayo Saka, Gabriel Jesus and Gabriel Martinelli all missing through injury.