So Greene has announced who will be staying and it looks promising.
Players either signed or offered deals:
King
Pidge, Garner, Mills, Galinski, Steer, Marshall
Dowie, Konadu, McGhee
Newsham, Miller and Sanders
IF Miller, Dowie and Konadu sign up that would give us 12 (I have omitted Vince as can't see him staying.)
All being well 13 players retained means that Greene can take time to find the best possible players available. I think we will still need another goalie, left sided midfielder, one/two central midfielders and a forward.