Police have now released CCTV footage after a man was attacked on Canal Street, in Manchester City Centre.
It happened at about 9pm on Saturday 1 November 2014, when the 24-year-old victim was on Canal Street promoting his LGBT rugby team.
He was approached by a group of men, one of whom made a homophobic comment to him before punching him in the face.
The victim was treated in hospital for a broken jaw.
Detective Constable Louise Kelly of North Manchester division said:
â€œWe believe this to be a homophobic attack and I want to make it clear that this kind of behaviour will not be tolerated on our streets.
â€œThe victim was merely promoting his rugby team, but was subjected to an attack, during which he suffered a broken jaw and has had a metal plate inserted into his face.
â€œI want to reassure local businesses and residents, who live, reside or socialise in the gay village that we are treating this extremely seriously.
â€œWe are re-appealing for witnesses and I want to hear from anyone who recognises the man in the CCTV footage or who may have witnessed the incident.
â€œWeâ€™d also like to speak to the other men in the CCTV as they may have some information that may help our investigation.
â€œIt was 9pm in a busy area, there were lots of people on Canal Street at that time that may have seen something.â€
If you have any information about the incident please call police on 101 or independent charity Crimestoppers on 0800 555 111.