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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Dry, but with widespread mist and hill fog. Winds will remain light and temperatures will not drop much from the daytime highs.
Cloud will persist through the evening and night with mist, and fog forming on Derbyshire hills, with periods of rain spreading northwards.
The family of a man who was who stabbed to death over a comment made at a party, have said their "lives have been torn apart".