The Portuguese defender has missed Pompey's last two matches with a hamstring niggle.
Rocha is unlikely to be risked unless he is 100 per cent fit so boss Guy Whittingham could stick with the side which thumped Sheffield United 3-0 last weekend, meaning Sam Sodje keeps his place at centre-half.
Young midfielder Nick Awford made his debut as a late substitute against the Blades and will be hoping to be involved again.
Teenage winger Jed Wallace could be playing his last game for the club having been linked with a summer move along the south coast to Brighton.
Whittingham takes charge for the first time since being confirmed as Pompey's permanent manager on Wednesday.