The Blues have parted company with the 59-year-old after almost four years in the Fratton Park hot seat.
Saturday’s defeat to League Two Salford in the Papa John’s Trophy proved the final straw for the PO4 hierarchy.
With worry they’ll miss out on the League One play-offs amid a run of six defeats in eight matches, they’ve taken the decision to axe Jackett.
Now Mark Catlin has said the search is on to find a replacement with 13 league games remaining.
Here are the current bookmaker odds with Sky Bet...
(odds correct at the time of publication)
1. Daniel Stendel - 2/5 favourite
The former Barnsley and Hearts coach remains the firm favourite and is someone Pompey have approached.
Photo: Nathan Stirk
2. Neil Harris - 7/1
Another who is on Pompey's shortlist but he has drifted in the betting from last night.
Photo: Lewis Storey
3. Danny Cowley - 8/1
No surprises Cowley is among the favourites but he has drifted in the betting.
Photo: Naomi Baker
4. Chris Coleman - 10/1
His name has been mentioned by some fans. Coleman is currently based in Winchester but hasn't managed for two years.
Photo: Catherine Ivill