Michael Appleton will step up his search for Pompey recruits after witnessing their abject Watford showing.
The Blues boss is targeting up to three emergency loan signings before the window closes on Thursday at 5pm.
Former club West Bromwich Albion will be the first port of call, with the likes of strikers Marc-Antoine Fortune and Roman Bednar possible targets.
Appleton has been stung into action following Saturday’s dreadful 2-0 defeat at Watford.
Michael Kightly and Marvin Sordell grabbed the goals as the Championship strugglers ran out convincing winners.
But it was the manner of the loss which upset the large away following and showed Appleton the urgent need to strengthen.
Pompey’s manager revealed he learned a lot about his new side from that Vicarage Road performance.
And just one match into the job he has seen enough to convince him he wants some new additions.
He said: ‘I learned a lot from Saturday.
‘You probably learn more from losing games than you do actually winning the games.
‘There’s a lot I will take out from the game, especially with individuals.
‘It gives me a lot to ponder over in coming weeks with certain players, their attributes and what they can bring to the team and the squad.
‘We are looking to get two or three in before Thursday.
‘We have been working very hard to try to make that happen.
‘Four or five days in football is a long time so hopefully we’ll have a few fresh faces in by Thursday.
‘I know it’s a lot to bring in during a short space of time but we are not daft, we have been teeing up certain situations and enquiring about certain people.
‘I think Saturday was a good opportunity to see and make a few decisions from that point of view.
‘The squad is small at the minute so it is going to need a little bit of quality to freshen things up and it will do everyone the world of good.’
The likes of Bednar and Fortune would represent quality additions. The duo have made just three appearances between them for their Premier League side this season.
Appleton is remaining tight-lipped on the identity of targets but admitted West Brom is a current hunting ground.
He added: ‘West Brom is an option but obviously there are a lot of clubs out there with good players and finance has to be right as well.
‘We will make the best decision for the football club.
‘Obviously Marco (Fortune) is a player I know at West Brom, so people are going to put two and two together and try to come up with the right answer.
‘There is a list of players but you can have a list as long as your arm – they have got to be able to come to you.
‘The finance has to be right and the other club has to agree to let them come and play for you.’