Boss Andy Scott is set to give the new signing his first run out in tomorrow's reserves clash with Bradford, weather permitting.
Griffiths has not figured in a competitive game since turning out for Chesterfield against Walsall on December 17th.
Scott will also use the game to give match practice to Ryan Cresswell and Mark Bradley who have recently recovered from injury.
Meanwhile the Millers players had to settle for gym work to start their week as they arrived to frozen training pitches at Roundwood this morning.