The incident happened at around 6.15pm on Sunday, 11 October, when a 33-year-old man was assaulted by a male on Panmure Street.
The man sustained serious facial injuries and was taken to Glasgow Royal Infirmary where he remains in a stable condition.
Officers have now turned to the public for help, an have released a description of the suspect.
The suspect is described as a white male, early 30s, of slim build with dark scruffy hair and stubble. He was wearing a grey/black jumper and dark jeans.
Detective Constable Paul Corr, of Maryhill CID, said: “We are now appealing for witnesses to assist with our investigation.
“Anyone who was in the area around the time of the incident or who may have dash-cam footage, should contact police by calling 101 and quoting incident number 2832 of 11 October.”