Manchester City winger Kelvin Etuhu is facing jail.
Etuhu, 22, will be in the dock at Warrington Crown Court after previously admitting assault occasioning actual bodily harm and affray, at an earlier court hearing.
He was caught on CCTV cameras kicking the victim three times on the ground after he floored him with a punch.
The fight broke out after two groups of club goers had earlier squared up in the Manchester 235 Casino in the early hours of February 28 last year.
Footage from city centre CCTV showed an incident outside the casino in which Etuhu's girlfriend was knocked to the floor as her partner became involved in a separate brawl.
The Nigerian-born player is a graduate of the Manchester City academy, making his first senior City appearance in September 2007 before being loaned out to Leicester towards the end of that season.
The younger brother of Fulham player Dickson Etuhu, he has also been on loan at Cardiff and Rochdale.
He was left out of City's Premier League squad for the 2010/11 season.
Etuhu, of Astley, Wigan, is on bail.
