Martin wants to buy out the share owned by Delancey Estates, who wanted to sell Fossetts Farm - land earmarked for a new stadium.
"Everything is nearly agreed, and a deal should be completed soon," Martin
said. "Delancey felt they could sell the Fossetts Farm site to others, but I wasn't prepared to let that happen."
There have been proposals for the Shrimpers to move to Fossetts Farm, a greenfield site near their training ground, since Martin's property development company Martin Dawn took charge of the club seven years ago.