Manchester City midfielder Oscar Bobb has fractured a bone in his leg during training and is set for a spell on the sidelines, the PA news agency understands.
The 21-year-old is being assessed by medical staff to determine the full extent of the injury.
It is not a major break, though, and was sustained in a non-contact incident.
Bobb has been heavily involved in City’s pre-season preparations and played 89 minutes in Saturday’s Community Shield victory over Manchester United.
City begin their pursuit for a fifth successive Premier League title with a trip to Chelsea on Sunday.