Pompey boss Steve Cotterill will introduce a new fine system next season as he looks to improve Pompey’s disciplinary record.
Ricardo Rocha’s sending off last weekend took the Blues’ card tally so far this season to nine reds and 82 yellows.
Only Sheffield United have a worse record in the Championship.
But Cotterill insists, in terms of stamping down on his squad, his hands have been tied this season.
The Pompey manager points to the need not to alienate his small band of players when it comes to punishment.
But he has pledged that will change next term if he manages to get the squad numbers he desires.
He said: ‘What I say about decisions, sendings off and bookings has to stay within the dressing room.
‘I don’t publicly have a go at players, I don’t do that. I don’t think that is the way to do it.
‘What I haven’t done, but will do next season, is right from the off put a fine system in place that I couldn’t afford to have this season.
‘We have a small squad. So if you fine that player two weeks wages for getting sent off and then in two weeks time you are going to need him again, I am not so sure he will stick his neck on the line for you.
‘That’s the problem I have had to deal with. I have had to let it go and bite my lip.
‘I have had to manage that this season and without doing that I don’t know how I could have got around it because I have needed every player in every game this season.
‘If we are in a lot healthier state next season things like that will change.
‘This has been a small problem I have had this season which all of a sudden has emerged into a major problem.’