Lewin Nyatanga will miss out for Peterborough as their FA Cup campaign begins with a trip to out-of-sorts Stockport.
Nyatanga made his debut in the 3-1 win at Walsall in midweek after signing on loan from Bristol City but is not allowed to play in the cup as part of his temporary stay at London Road.
The Wales international played alongside Ryan Bennett and Kelvin Langmead as boss Gary Johnson switched to a five-man defence at the Bescot but he may revert to 4-4-2 against the Hatters - who have lost their last two games 5-0.
Playmaker George Boyd will serve the second of his three-match suspension but captain Grant McCann is back after a ban of his own.
Wide man Tommy Rowe picked up a groin injury at Brentford two weeks ago and is ruled out of a return to his former club.