Mr Gordon Richings, prosecuting, said the incident had been captured on CCTV and Mr Bousaida had lost four teeth as a result of being punched.
He said evidence from a dentist showed the level of injury meant the case was properly described as actual bodily harm, rather than a less serious assault.
Mr Warren Robinson, said Mills there was a background to the incident which did not amount to physical provocation.
He said:"My client says there was some tension between the two over money, which had been brewing and which had destroyed what had previously been a friendship."
Recorder Mr Donald Tait adjourned the case for a probation report and released Mills on bail.