Pompey are targeting the summer to finally rid Simon Ferry of his on-going hamstring issues.
The injury has sidelined the Blues skipper three times so far this season, much to the frustration of all.
The Scot returned to the first team on Saturday, after his latest lay-off, helping Richie Barker’s side to a goalless draw at Oxford.
Clearly a key figure in the Pompey midfield this season, it is crucial he remains available for selection during what has now become a League Two relegation fight.
Yet, worryingly, he has not been able to start three successive matches since September through his hamstring injuries.
And while Barker recognises the concerns, he believes it will not be until the end of the season before the problem can be properly rectified.
‘It’s not ideal. I am sure if you asked Simon it’s not ideal, either,’ said Barker.
‘It’s the hand we have been dealt for the time being and between all of the staff we are working hard to ensure we get the best out of him.
‘However, I don’t think we will solve it in the next few weeks and I don’t think we will solve it this season.
‘All we have got to do is make the best of this season and do what we can until the summer. But he has a fantastic attitude, he loves training, loves playing football
‘I wouldn’t know how it can be solved in the summer, although they have tried to explain it to me!
‘I have a fair idea but I don’t know. Sometimes you feel you have solved it, sometimes you don’t. It is not something that’s going to be solved by a week’s worth of treatment.
‘I think we need to get the best of him that we can and see where we go from there.’
The former Swindon player has made 19 appearances, with his one goal for the Blues coming in a 2-1 win at Burton in September.
Ferry was restored as captain on his comeback against the U’s – a role he served sporadically under Barker’s predecessor Guy Whittingham.