Mark Catlin is confident B teams have been chased off at least until the end of the 2015-16 campaign.
But Pompey’s chief executive believes the concept of introducing them into the Football League is now dead.
Instead, it is the Johnstone’s Paint Trophy which remains the likely destination for Greg Dyke’s unpopular proposals.
Although Catlin, who led the revolt in the summer over B teams, believes that mooted alternative won’t occur until after next season.
He said: ‘There won’t be B teams in a league now but I don’t think they will go away. At some point there will be a push from the Football League to get them into the Johnstone’s Paint Trophy.
‘That has obviously got more chance of going through than the league concept because at the minute, when you put on JPT games, any financial reward is negligible by the time you take out match-day costs.
‘I have a concern there are so many clubs struggling financially that a financial inducement could be offered which would see B teams in the JPT because some might find it difficult to turn it down.
‘I think next year is too soon to get an agreement and I have not seen anything in any upcoming agendas to suggest it is going to be put forward.
‘I would say it is probably further down the line. I could be wrong, this is just my own opinion.
‘My overriding concern isn’t so much B teams getting in the JPT, it’s just that you are opening the door a little bit.
‘And it just worries me when you do that somewhere down the line someone may want to kick it in.’