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
Scattered wintry showers during the evening will become fewer and further between overnight, with westerly winds tending to ease.
Largely dry overnight with some clear spells. Perhaps one or two showers across the far north, wintry on hills.
With the General Election just months away, we have found this gem from 1964, where school children give their views ahead of the election.