Some are among the highest profile names in football - both at home and on the continent.
While others are slightly less well known when it comes to their standings in the game.
But all these men have something in common - they spent periods at Pompey trying to earn themselves deals.
We’ve dug up a far-reaching list of players to appear in friendlies or rock up at the Blues training ground over the years.
21. Martin Devaney
The current Barnsley assistant manager was on trial at Pompey in 2012 following his release by Tranmere Rovers. | Getty Images
22. Ryan Bird
Ryan Bird completed a meteoric rise from electrician to pro after signing for Pompey following two goals at Hawks in 2013. Now 36, he last club was Slough. | The News
23. Moreno Torricelli
Harry Redknapp had a look at the Italian international and Juventus ace in 2002 - but opted against a deal. | Getty Images
24. Jonathan Afolabi
He was the mysterious triallist who answered Pompey’s striker SOS in 2023 and kept the seat warm for Colby Bishop, Joe Pigott and Dane Scarlett. | BELGA MAG/AFP via Getty Images