Pompey Supporters’ Trust have blasted the club for failing to add permanent signings during the transfer window.
SOS Pompey have already come out to criticise owners Balram Chainrai and Levi Kushnir over the lack of transfer activity on Monday.
Now the Supporters’ Trust have followed suit with a strongly-worded statement as the fans’ backlash continues.
The group – which boasts more than 2,300 members – has stopped short of calling for a demonstration.
However, they have urged supporters to be ‘lawful’ on the day of proposed protests against Derby on Saturday.
A statement said: ‘The Pompey Supporters’ Trust has expressed its disappointment that no permanent players were signed to help Steve Cotterill and the threadbare squad we currently have.
‘The policy of “quality over quantity” being pursued by the club is puzzling and is certainly a gamble.
‘If that gamble fails and we end up being relegated to League One, then fans will rightly ask who will carry the blame.
‘It is clear that fans’ already thin patience has finally snapped.
‘The PST understands fans’ frustrations and we share them, though we will leave it up to individual fans to decide how they act upon those frustrations but we urge them to be lawful.
‘We also ask fans to support the team. They will need our own special brand of passion behind them if we are to stay in the Championship.
‘The failure to recruit the necessary players in the transfer window has to be explained in full by the club.
‘It is clear now the owners have no interest in the club during the CVA and they refuse all polite requests for them to speak to fans.
‘It is up to all of us, fans and club staff to pull this great club out of the mire. We can succeed, in spite of the obdurate ownership, to turn our fortunes around.’