Pompey will resist the temptation to rush Hermann Hreidarsson’s return.
The huge Blues favourite last week stepped up his work after suffering a set-back with his Achilles problem.
Hreidarsson has been feeling some discomfort with the injury after rupturing the tendon in March last year.
That kept him sidelined for seven months before his return last October.
A recurrence of pain in the Achilles led to Pompey taking the 37-year-old out of the firing line.
Caretaker manager Guy Whittingham explained there has been decent progress for the Iceland international – but he still needs to err on the side of caution.
Whittingham said: ‘Hermann’s getting better. He’s trained lightly and it was a bit heavier last week for him.
‘We’re just looking to see if there’s a reaction from him.
‘I’m sure Hermann will have an important part to play at this club before the end of the season, that’s for sure.
‘He’s getting better and better week by week.
‘We know if Hermann comes back he will give his all – but we want to make sure Hermann is ready to give his all.
‘He’s so enthusiastic and wants to do so well.
‘But there’s sensible heads on the staff side of things, so we have to make sure he’s totally ready.
‘He’d like to be back yesterday. He’s frustrated when he isn’t playing. We have to remind him not to get too enthusiastic.
‘He’s a great character, great to have around the place.
‘Even when he’s not fit he’s up there with the banter, which is what you need.’