David Lampitt insists Pompey have no need to sell players during the transfer window and has told rival clubs after a cut-price deal: Look elsewhere.
The Blues chief executive has moved to reassure fans who are bracing themselves for squad losses in the final nine days of the window, while boss Steve Cotterill attempts to bolster his resources.
And Lampitt denied talk Pompey still need to recoup money they were hoping to make in the summer.
Lampitt explained: 'We're not in a situation where we have to sell anyone in this window.
'There was a shortfall from last summer's trading but there isn't a hangover from that summer period.
'Had we generated more over the summer, the business plan might have been easier to achieve. But we didn't and that's where we are.'
While David Nugent is bound to attract some late interest from Premier League clubs, Pompey are desperate to hang on to him.
John Utaka may yet be a target, while there have been approaches for both Michael Brown and Richard Hughes.
But Lampitt insists any potential cash generated from transfers will be reinvested into the club and cannot be taken out of the business by Blues owners Balram Chainrai and Levi Kushnir.
Lampitt said: 'As a board, we took the decision over Christmas that if we generated any excess of funds over what we've planned, then it would be available to Steve to reinvest. There is a latent fear among some supporters that the owners will sell all the players and take the cash.
'They cannot take it out of the business. It's impossible for the owners to do that.
'As part of the arrangements with the Football League, there is a very clear undertaking that that money can't be taken out of the business.'
Lampitt has also defended the club's owners over their decision not to communicate directly with supporters.
SOS Pompey had planned a demonstration before today's game but it was postponed yesterday after they agreed to hold talks with Lampitt.
He said: 'I understand why supporters would like it to happen (the owners to speak).
'At the same time, I think the measure of whether the club is being run in the right way is not whether the owners are public figures.
'As chief executive, I am the mouthpiece for the board and that's not unusual. Some chairmen like the limelight and others don't.
'Ultimately, it's a personal choice. It's a matter for them.'