The Blues have outlined their disapproval for the introduction of salary caps ahead of the 2020-21 season.
The potential implementation would enforce a £2.5m per year wage restriction on League One sides ahead of the new campaign.
Pompey’s current wage bill is understood to be around £4m.
Mark Catlin has branded the concept ‘an absolute disgrace’ and pinpointed that the Blues will have to slash their wage bill and operate with the same salary cap as clubs recording substantial losses.
But how do the other teams confirmed to be in League One next term feel about a salary cap?
We've taken a look at what’s been said...
17. Shressbury
CEO Brian Caldwell has told the Shropshire Star he believes salary caps could aid the Shrews as it would 'bring the rest of the clubs’ wage budgets to similar to our levels'. Photo: Richard Heathcote
18. Sunderland
The Black Cats are another side firmly against salary caps. CEO Jim Rodwell has said 'EFL are oversimplifying the sustainability issue' and 'big football club we can generate more revenue and therefore we should be able to spend that revenue on players while remaining sustainable'. Photo: Malcolm Mackenzie
19. Swindon
The League One newcomers haven't said too much on the salary cap, although manager Richie Wellens has said the uncertainty has been impacting his summer transfer business. Photo: Andrew Matthews