The young girl was walking home from her school in Sale, Greater Manchester at around 4pm on 25th March 2015.
"We do not know what this man's intentions were and that is why we are taking this incident very seriously"
As she passed Edinburgh Close, a man grabbed her arm before letting go.
As she walked away, she was grabbed again by the offender before she punched him in the face and ran off.
Greater Manchester Police have now released an edit image of the suspect and are appealing for anyone with information to step forward.
Detective Constable Dan Hayes said: "This young girl has been very brave and worked with our forensic imaging specialists to relive what she went through and produce an accurate image of what he looked like.
"I would ask people to look carefully at this image and if you do recognise this man, or see him hanging around the area, please call us.
"We do not know what this man's intentions were and that is why we are taking this incident very seriously and doing all we can to apprehend this man.”
The man is described as being white, in his late 50s, 5ft 8in tall, of large build, had short greying hair, had a long face and pointy nose.
He wore silver framed rectangle glasses with an orange/brown tint to the lenses, a black bomber style jacket, white polo t-shirt, loose fitting blue jeans and black shoes.
He also spoke with a local accent.
Anyone with information should phone police on 0161 856 7530 or the independent charity Crimestoppers, anonymously, on 0800 555 111.
*Holding image obtained from Google Maps / Grater Manchester Police.