Newcastle United midfielder Joey Barton has admitted a Football Association charge of misconduct relating to an incident involving former team-mate Ousmane Dabo.
The incident occurred while the pair were Manchester City players at the club's Carrington training ground on May 1 2007 and, after pleading guilty to assault at Manchester Crown Court last month, Barton was given a suspended sentence.
Barton left City for St James' Park in a £5.8million transfer in June 2007.
"Newcastle United midfielder Joey Barton has admitted a charge of violent conduct and requested a personal hearing," read an FA statement.
"A hearing before a regulatory commission will be scheduled in due course."
Barton was released from prison on July 28 after serving two months of a six-month sentence for a separate assault.
The 25-year-old was convicted of the offence after being filmed punching a man in Liverpool city centre at the end of last year.