The former Ebbsfleet keeper has been on trial at Priestfield Stadium since the players returned to pre-season training and Hessy has been impressed.
"We'll do something within the next couple of days," he said. "He's shown enough to warrant a deal. I've been pleased with him and I think he will give Alan a bit of competition. He needs to be kept on his toes.
"He's had a good upbringing and had a lot of experience in the Conference."