Manchester City winger Leroy Sane has damaged the anterior cruciate ligament in his right knee.
He is scheduled to have a surgery next week.
The flying winger picked up an injury in the opening stages of City’s Community Shield triumph over Liverpool at Wembley Stadium.
He has undergone testing throughout the week, with a specialist doctor travelling to Manchester for further examinations to understand the extent of the injury.
A statmenet by the club on Thursday explained: “Leroy will have surgery in the coming week. Manchester City will provide Leroy with all the support and guidance he needs, and everyone connected with the Club wishes him a quick and full recovery.”