The man was walking along Main Avenue in Forest Town when he was attacked on Saturday, September 26.
A police spokesman said the man suffered with serious facial injuries and was knocked unconscious during the assault.
The alleged attack took place about 8.15pm and police are appealing for witnesses or people that may have been in the area.
Anybody with information regarding this assault should call Nottinghamshire Police on 101 quoting incident number 812 of 26 September.
Alternatively, call Crimestoppers anonymously on 0800 555 111.