Stevenage have placed striker Marcus Haber and defender David Gray on the transfer list.
The pair join James Dunne and Robin Shroot as players available for transfer.
Canadian international Haber has largely been out of favour this season and enjoyed a loan spell at fellow League One strugglers Notts County earlier in the campaign.
Meanwhile, former Manchester United man Gray could be set to leave Hertfordshire after 18 months at the club.
More top news
The Suffolk PCC has called for tighter EU border controls after a convicted paedophile banned from the UK was jailed for the second time
Pupils at a school in Norwich have been cooking their own home grown produce after turning parts of the playground into a garden
Exhibition tells the story of Sir Ernest Shackleton's mission to "bring every man home"