Police have released a CCTV image after a serious assault in the Arboretum area of the city centre.
Officers said the incident happened around 3pm on Friday, March 29.
Anyone who recognises the man pictured is asked to call Nottinghamshire Police on 101, quoting incident 607 of March 29.
Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.
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