Fluminense midfielder Marquinhos Calazans will undergo knee surgery and be sidelined for eight months after being involved in a bar fight with fans of a rival club.
Calazans, 21, was already recovering from an operation on his right knee when he clashed with Flamengo supporters in a Rio de Janeiro bar.
Fluminense doctor Michael Simoni told ESPN Brasil on Tuesday that Calazans' injured knee was stepped on during the brawl and the player will need to undergo another procedure.
Calazans' first injury came in September and he was expected to be back in action in March. The new surgery is expected to take place in the coming days.
Calazans, who played 24 matches for Fluminense in 2017, has not commented on the incident.