The promoted club have also offered youngster Olly Mehew a further year.
But Sam Wedgbury, Marcus Kelly, Louis McGrory, Mohamed Chemlal and Anthony Jeffrey have all been released.
Kaiyne Woolery, Mark Ellis, Charlie Cooper, Jake Gosling, and Curtis Tilt's loan spells have ended, after Sunday's National League promotion final.
Meanwhile, veteran former Birmingham City midfielder Darren Carter left the Gloucestershire club on 3 May.
Forest Green Rovers have offered keeper Sam Russell a new one-year contract and have taken up the option of extending midfielder Keanu Marsh-Brown's deal.