The English Football Association says the Newcastle United midfielder Joey Barton has admitted a charge of violent conduct against former Manchester City team-mate Ousmane Dabo.
Barton was given a four-month prison sentence, suspended for two years, for the attack when he appeared in court.
At the time of his sentencing, Barton was already serving a six-month prison sentence for an attack on a teenager in Liverpool city centrelast December.
The FA also charged Barton with the attack on Dabo, which took place at City's Carrington training ground outside Manchester in May last year, after he was released from prison at the end of July having served 74 days.
The 25-year-old midfielder, capped once by England, has been granted a personal hearing before a Regulatory Commission.
