Pompey haven’t ruled out Liam Lawrence and Dave Kitson playing again this season.
Lawrence missed the entire Easter programme with a calf injury sustained at Cardiff.
Meanwhile, Kitson picked up a rib problem against Swansea, forcing him out of Monday’s trip to Burnley.
The pair remain major doubts for Monday’s Fratton Park clash with Norwich.
But Steve Cotterill is not ready to write off their campaign.
And he believes the former Stoke pair still have an outside chance of featuring again in Pompey’s final two matches.
He said: ‘Kits has damaged the cartilage in one of his ribs, which makes it really sore when he moves.
‘He is going to visit the doctor on Friday for another look at it and we will take it from there.
‘As for Liam, he has had two more injections in his calf and it is a bit sore at this moment in time.
‘Thankfully, that is not the same calf injury which kept him out earlier this year.
‘It is a slight tear of the outside of his calf, which happened during a tackle with Jlloyd Samuel against Cardiff.
‘There was nothing malicious about it, it was just how they went in and now Liam has an injury.
‘I wouldn’t say that is it for them this season, though.
‘It is still a bit too early to say that.
‘We’ll just have to wait and see how things pan out.
‘Hopefully, they’ll be back before the season’s end.’
Meanwhile, Ritchie de Laet and Joel Ward have been in the treatment room since the Burnley draw.
De Laet came off in the second half at Turf Moor with the recurrence of a calf problem, while Ward is experiencing a tight calf.