Drew Talbot comes into the Pompey side to face Oldham this afternoon.
He replaces Christian Burgess in the only change from the side that beat Bristol Rovers earlier in the week.
The centre-back is suffering with a calf injury and misses out on the chance to make his 100th Blues appearance.
Former Fratton loanee Eoin Doyle is fit to start up front for the visitors.
Pompey: McGee; Talbot, Thompson, Clarke, McCrory; Close, O’Keefe; Lowe, Pitman (c), Kennedy; Hawkins
Subs: Bass, Haunstrup, Rose, Evans, Bennett, Naismith, Main