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.
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Most areas will have increasing cloud and some northern areas will turn misty with possible fog by the end of the night.
Dry and mild overnight. Some heavy showers on Saturday.