The 17-year-old, from Cusworth, is in desperate need of sponsorship to help him fulfil his dream of competing in the Games as a member of the Great Britain rowing squad.
He is currently training for next year's national championships and Great Britain trials but, without his own single scull boat, he is at a disadvantage to his peers.
And, with boats costing anywhere between £3,000 and £7,000, his mother Claire Mushet is trying organise a number of fundraising events to help him pursue his ambition.
She said: "He has been earmarked for the Great Britain squad in the future and I'm behind him all the way – with Grant anything is possible."
The former Balby Carr pupil has achieved success in a number of competitions - the most recent coming in events at Boston and Nottingham.
Just nine weeks after moving to York St Peter's School, Grant helped the school's novice quadruple sculls second crew set a new course record in the Boston marathon.
He was then promoted at the Nottingham head race to the first crew who finished the fastest team of the day ahead of over 100 other crews.
His dedication to his sport saw him choose sit his A-levels at St Peter's as the school, which backs on to the River Ouse, has an outstanding rowing tradition.
Grant, who hopes to study medicine, has now set his sights on attending university at Oxford or Cambridge with the possibility of taking part in the Boat Race.
He started rowing at the age of 11 when he moved to Balby Carr and never looked back after becoming a member of Doncaster Rowing Club.