Griffiths has just won the League Two title on loan at Chesterfield and could be handed a first-team return when Posh face MK Dons this weekend.
Manager Darren Ferguson said: "Charlie Lee is a problem as he felt his hamstring going a bit so we have got Scott Griffiths back and if I have to use him I will.
"I signed Scott so I know what he's about.
"He's been playing regularly in a successful side as well so he's in good form and he's confident."
Source: PA
Source: PA