Steve Cotterill is hunting for the creative maestro who will make a difference for Pompey this season.
The Blues boss believes his team is still lacking a ball-playing talent who can open up sides in the Championship.
Cotterill feels his squad needs five new faces before the close of the transfer window at the end of the month.
He has now hit a wall in his player hunt and knows he needs bodies to boost options.
Christian Dailly is training with Pompey after failing to agree a deal with Charlton, and could come on board.
But Cotterill knows he still needs someone to provide that spark and open up opposing teams.
He said: ‘You are going to need people who work. You need players who are reliable.
‘However, that’s not to say we don’t need someone a little bit different who can do it on a 90-minute basis.
‘Sometimes you need players who are going to unlock a door for you.
‘We probably have the best player in the world who can do it for 20 minutes or half hour in Kanu. We can’t expect King to do it all the time, though.
‘Kanu can unlock a door, but it’s not going to be where he starts and plays all the time.
‘Last year, for me, King started too many games as opposed to coming off the bench where he can have a real impact.
‘They are difficult players to find, but we need either one of them or someone who scores more goals. It’s one or the other.
‘We are probably looking for that something a little bit different. We don’t want to add anyone else to the squad. We want to strengthen the team because it then strengthens the squad.
‘There might have to be a couple of things we need to do to help us immediately, though.’
Cotterill has added five players to date during a quick-fire period of activity last month.
A barren run has followed that flurry of activity, but the Pompey boss is pleased with the additions he has made so far and, importantly, their character.
Cotterill said: ‘We’re at a club where the players need to put in a shift. If they don’t, the fans will be after them. Fact.
‘The fans will take to the lads we’ve brought in when they see what types they are.
‘There are certainly types you need to bring into certain football clubs.
‘The lads we’ve brought in have given us good legs and good energy. We’ve got a bit of today and a bit of tomorrow.
‘We do need someone else but we need players who are going to do the same at home against Manchester United in the Cup as at Boro away in the league.
‘If you can get enough players who can give you seven out of 10 every week that will go a long way to getting you good points at the end of the season.’