Blues boss Steve Cotterill has had to realign his January hit-list in the wake of Pompey's contracts saga.
Cotterill is still waiting to hear from owner Balram Chainrai, with the January transfer window now open.
The Blues boss admitted he has had to think again about potential recruitments, with midfielders Michael Brown and Richard Hughes both currently out of the equation.
Neither man can play another game without invoking a clause in their contracts to give them new deals which Pompey simply cannot afford.
That has left Cotterill having to think about recruiting in the central-midfield area – if he is given the opportunity by Chainrai.
Cotterill felt like he was being stifled when it came to trying to keep up a charge for the play-offs.
He said: 'The positions I might have wanted to bring in a month ago could well be different now with Michael and Richard's situation.
'I might have thought I am happy enough to get by with my central midfielders or I want only one new one, whereas now I might want two of them and I will have only two loans left.
'It's the lack of flexibility I have making my choices and decisions and, to be honest, it puzzles me because I cannot find the answer to that at the moment.
'Our numbers are low and loan numbers are high. If you are going to lose more permanents, they have to be replaced by loans and, therefore, you have to sit and wait and be reactive to a situation, which is not ideal.
'You have obviously got to go and speak to other clubs and that is not something I have done because you don't want to go barking up trees and making yourself look a bit silly. I have got to sit tight at the moment.'