However Harrold, who has dropped out to contention at Brentford due to Former Mariner Isaiah Rankin and Jamaican International Deon Burton, will not join up with The Mariners till next week.
The promissing youngster signed from Harlow Town in August 2003, and made an instant impact at Griffin Park, he played a big part in the clubs demolition of Lincolnshire non league side Gainsborough Trinity last season, Harrold scored 3 as Brentford won 7-1.