The outstanding defender is sidelined until the next season after tearing his anterior cruciate ligament in his knee, meaning John Mousinho has lost arguably his outstanding player at the back.
Mousinho has indicated he will now look to the January transfer window for a new recruit in that area to help his side sustain their Championship push.
We’ve rounded up some of the potential options Pompey could looks to – along with some of the names you’d love to see arrive.
5. Josh Knight
Talented Peterborough central defender was transfer listed last summer with his deal up at the end of the campaign. Has previously come close to moving to Championship with QPR. Photo: Ben Roberts Photo
6. Rarmani Edmonds-Green
Versatile central defender is contracted at Huddersfield until the summer, though the Terriers have an option to extend. Has Championship and League One experience under his belt. Photo: CameraSport - Alex Dodd
7. Brad Hills
One of the top performers in League Two this season, the Norwich teenager is gaining experience with Accrington. Eight yellows and a red card already suggests he may have some disciplinary issues to work on! Photo: George Wood
8. Jack Tucker
Classy ball-playing defender was often mentioned with a move to Pompey in Kenny Jackett's reign. Moved to MK Dons last year on a 'long-term contract' so probably wouldn't come cheaply. Photo: Jane Russell