City confirmed on Thursday that the 23-year-old had ruptured his anterior cruciate ligament (ACL) in his right knee in an innocuous incident during training in Townsville this week.
It’s the third time Gameiro has endured an ACL injury, although the first two were to his left knee.
Gamiero will undergo surgery next week and immediately begin rehabilitation in the hope of making it back in time for the start of next season.
It’s a cruel blow for the talented youngster, who has scored five goals in 33 Hyundai A-League appearances for Wellington, Sydney FC and City and is one of the most exciting young prospects in the competition.
One of the more popular players in the Hyundai A-League, there was plenty of support for Gamiero from players and fans alike on Twitter.
@CoreyGameiro Gutted for you mate. Hope you are ok. Stay strong and keep fighting 👊💪— Alex Wilkinson (@alexwilkinson84) September 15, 2016
Thoughts are with you @CoreyGameiro so sad to hear— Adam Taggart (@adamtaggart22) September 15, 2016
Terrible news about Corey Gameiro's injury. Just devastating for such a young, talented player. Wish him all the best with recovery.— Ned Zelic (@NedZelic) November 20, 2014
@CoreyGameiro what have you done brother ? Hope for a speedy recovery 👊��— Jack Bird (@JackBird_1) September 15, 2016