Pompey had planned to splash the cash during the transfer window in an attempt to get the jump on their mid-table rivals and push for a top-six finish.
The FA Cup winners parted with £9million to bring England striker Peter Crouch back to Fratton Park and just recently shored up their rearguard by signing French defender Younes Kaboul from Tottenham Hotspur.
The South Coast club were determined to land one more big name following the departure of Sulley Muntari, with Chelsea winger Shaun Wright-Phillips reported to be the top target.
But times are tight on the financial front, and Storrie admitted that uncooperative banks are gravely hindering any hopes of another big buy before the end of August.
“The credit crunch is there,” the Pompey chief said in The Sun. “We don?t get away from it just because we?re a football club.
“The banks are now tighter and you just cannot continue to increase debts.”
Pompey won’t part with duo
Liverpool Accept Pompey Crouch Bid - Report
Liverpool Accept Pompey Crouch Bid - Report
Fergie Brings Three Youngsters To South Africa
Crouch Exit To Spark Anfield Spending Spree?