Date of birth
Under 18's goalkeeper who made his first team debut on the bench in a Checkatrade Trophy tie at Doncaster Rovers.
Ollie joined the club at under-nines level and played through until under-15s before joining Sheffield United. He then rejoined the Mariners as a scholar last season.
The goalkeeper, who has excellent distribution and deals with crosses well, has represented the reserve team regularly since rejoining the club last season.