A man was rushed to hospital with facial injuries after being assaulted in the city centre in the early hours of Sunday morning.
The 29-year-old was standing near the entrance of the Royal Concert Hall when he was attacked at around 3.15am on Sunday, September 8.
The suspect then returned minutes later and began punching and kicking him.
The victim was later taken to hospital facial injuries.
Police Scotland are now appealing for information following the incident.
The suspect is described as white and in his late 30s. He is around 5ft 6 , bald and with a medium build. He was wearing glasses, a dark jacket, possibly bomber style, light coloured shirt and jeans.
"CCTV enquiries are ongoing and if anyone has any relevant information, please contact us on 101 quoting incident number 0801 of the 8 September of Crimestoppers anonymously on 0800 555 111.
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