At the conclusion of the 2021-22 campaign clubs across the country have unveiled their retained/released lists.
This has included a number of former Blues players - who achieved varying success at Fratton Park.
Here are the 12 players who are set to leave their current clubs for free at the end of May – including those yet to pen new deals.
5. Marlon Pack – Cardiff
Years at Pompey: 2009-2011 , Pompey appearances:2, Years at Cardiff: 2019-2022, Cardiff appearances: 109. Picture: Morgan Harlow/Getty Images Photo: Morgan Harlow
6. Stephen Henderson – Charlton
Years at Pompey: 2011-2012 & 2018 (loan) , Pompey appearances:28, Years at Charlton: 2021-22, Charlton appearances: 5. Picture: Pete Norton/Getty Images Photo: Pete Norton
7. Jason Pearce – Charlton
Years at Pompey: 2011-2012 , Pompey appearances:44, Years at Charlton: 2016-2022, Charlton appearances: 175. Picture: James Chance/Getty Images Photo: James Chance
8. John Marquis – Lincoln
Years at Pompey: 2013 (loan) & 2019-2022 , Pompey appearances:127, Years at Lincoln: 2022, Lincoln appearances: 20. Picture: Robin Jones Photo: Robin Jones