Diallo picked up the ankle issue during a routine session at Carrington earlier this week. Subsequent medical assessments revealed damage that will require a rehabilitation period of at least six weeks before he can return to full training.
The news comes as a frustrating setback for both the player and the club, particularly given his impressive progression and influence in attack over recent months. Medical staff will monitor his recovery closely over the coming weeks, ensuring that he does not rush his comeback and risk further aggravating the joint.
The timing of the injury forces the squad to adjust their offensive plans just as the campaign enters a critical period of domestic fixtures.