Jeffers signed an eight-month contract with Posh on Wednesday after a successful two-week trial. The 21-year-old striker has not made a Football League appearance since coming on as a late substitute in a League Two game while on loan at Cheltenham in May 2011.
Kgosi Ntlhe will return to the squad after the full-back missed the win at Port Vale while away on international duty with South Africa.
Lee Tomlin is making progress in his recovery from an ankle injury and the forward has an outside chance of being included in the squad when Darren Ferguson's team play Sheffield United on Tuesday night.
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