The incident happened at around 6.30pm on Thursday 6 September in Noel Street, Hyson Green.
A man aged between 30 and 35-years-old approached the boy and his mother.
Nottinghamshire Police have released a CCTV image of a man they want to speak to in connection with the incident.
More top news
The forecast means train services on West Coast mainline will be limited to 50mph for safety reasons between the West Midlands & Birmingham.
Storm Doris brings wet and windy weather.
Wet and stormy tomorrow. Some disruption likely.