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)
5. Chris Wilder - 14/1
Was interviewed for the Pompey job in 2013 but lost out to Richie Barker. Stock far too high now to drop back down to League One having guided Sheffield United to the Premier League before being sacked yestersay. Photo: MIKE EGERTON
6. Sean O'Driscoll - 16/1
The current head of coaching and learning at Pompey Academy seems he's not being considered. Photo: habibur rahman
7. Ryan Lowe - 16/1
Another who would be high up fans' list but he also penned a new contract at Plymouth until 2024 earlier this year. Another who'd require compensation. Photo: Pete Norton
8. Lee Bowyer - 8/1
The Charlton manager recently complimented Pompey as an example of a club to follow. However, Bowyer signed a new deal at The Valley to keep him at the club until 2023 and would require compensation. Photo: .