Yiga, who has already impressed for the Hawks during pre-season, is a versatile player who is able to play in defence, midfield and attack.
He spent last season at Canvey Island and Dulwich Hamlet, and has previously featured for Margate, Billericay Town, Thurrock, AFC Sudbury and Witham Town.
We welcome Lawrence to the club and look forward to seeing him in action when the Ryman Premier Division campaign kicks off on Saturday 13th August.