Portsmouth chairman Milan Mandaric set a match under the FA Cup tie with Southampton with a broadside at his St Mary's counterpart Rupert Lowe.
Mandaric is still angry with the circumstances in which former boss Harry Redknapp joined Saints.
The Pompey chairman said: "I respect Southampton as a football club, but I don't have the same feelings for their chairman.
"With friends like that, I don't need enemies," added Mandaric.
Mandaric feels he was owed a courtesy call from Lowe when Redknapp was appointed Saints boss, even though Redknapp had resigned from Fratton Park two weeks earlier.
The Pompey chairman said: "When Harry went to Southampton, Rupert Lowe did not have the decency chairman-to-chairman to speak to me about it.
"I had stood up for Rupert in the past but I was unhappy with the way he handled this situation."
Mandaric also reacted to speculation that the £2m sale of Nigel Quashie to Pompey's bitter rivals was prompted by a desire to recoup some of the money he has pumped into Pompey.
The Serbian-born businessman said: "I have spent more at Portsmouth on petty cash than Lowe has spent at Southampton.
"The only time I will speak to Rupert Lowe is when I buy a hockey club because that is his area of expertise.
"Harry Redknapp will see who has money and who does not when it comes to transfers."
Southampton midfielder David Prutton added fuel to the simmering feeling between the clubs with comments that he hoped Saints could drag Pompey into the relegation dogfight.
Pompey are nine points ahead of Saints, who occupy the last relegation slot, but have lost their last three Premiership matches.
Prutton said: "I'd really love it if they were dragged into the relegation fight, especially if we left them there.
"They've had a few dodgy results and the more clubs that get dragged into the fight, the merrier."