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.
25. Celestine Babayaro
Former Newcastle and Chelsea defender had a stint on trial with Pompey in 2008. | The News
26. Ruben Sammut
Trained with Pompey in 2018 but there was no deal and surprisingly retired from professional football two years ago after a spell at Sunderland. His last club was Dulwich Hamlet. | The News
27. Josh Martin
The winger moved to the area last summer after leaving Norwich and asked to train with the club. That worked out well has his short-term deal was extended to the end of the season - enabling to feature eight times for the Blues during their League One title success. | National World
28. Jocelyn Blanchard
Came on trial in 2003 but was convinced by coach Joachim Low to sign for Austria Vienna. | The News