Pompey have been plunged into a goalkeeping crisis following a knee injury to Paul Jones.
And that could open the door for Darryl Flahavan to make a return for the club.
Jones was left with his left knee in a brace following a crucial role in Saturday’s 1-1 draw at Oxford United.
Pompey are still awaiting the outcome from a scan taken yesterday afternoon on the 29-year-old.
However, it is feared he could be out for at least a month having picked up the problem in what was his first league start of the campaign.
Brian Murphy is already absent with a groin problem and will not be back for Saturday’s visit to Bristol Rovers or the visit of Exeter (September 29).
In addition, Michael Poke has returned from his Eastleigh loan spell following injury to his left shoulder, which is expected to sideline him for up to two months.
Academy keeper Alex Bass was among the substitutes in last weekend’s draw at the Kassam Stadium, yet Paul Cook is eager for a more experienced player.
One option would be to sign Flahavan on a short-term deal, with the 36-year-old currently training with the club.
Following his exit from Bournemouth in the summer, he has been at Pompey maintaining his fitness while exploring his options.
Flahavan previously spent the 2010-11 campaign at Fratton Park, yet never made an appearance.
Instead he served as Jamie Ashdown’s understudy, named as an unused substitute in 45 matches under Steve Cotterill.
His brother, Aaron, made 105 appearances for the Blues before his death in 2001.