Nastasic injured his ankle in Hong Kong and according to the club will be "sidelined for four to six weeks".
Despite the setback for the City camp, they will be boosted by the news that striker Sergio Aguero is likely to be back in full training by the end of the week.
The Argentine has missed the majority of pre-season due to a knee injury but backroom staff are confident that Aguero is on the way to making a speedy recovery.
- Sports & Recreation
- Vincent Kompany
- Sergio Aguero
- Manuel Pellegrini
- Real Madrid