The chairman of Portsmouth's supporters club believes many fans will turn on former boss Harry Redknapp after his move to rivals Southampton.
Nigel Tresidder said: "Harry Redknapp was a god to us. He had done so well.
"But to go to Southampton, I think he will lose a lot of support, more than he may think.
"He has a right to earn a living, but a man like Harry Redknapp could probably have taken over at most clubs in the Premiership, if he was approached."
Tressider added that fans would also be hurt that Redknapp is back in football just two weeks after leaving Portsmouth, saying he needed a break from the game.
"I wouldn't say two or three weeks is a break," he said.
"He said he left of his own accord - then why is he getting into football again so quickly? There are other things to be asked, I think."
Many Pompey fans on the BBC's 606 message boards have echoed Tressider's view that it is not the switch itself but the way it has come about that has upset the supporters.
However, many are hopeful that Portsmouth can now put the past behind them
One said: "Hopefully this will give us the unity we've been lacking since this whole shambles started.
"I feel sickened by Harry's actions but that makes it easier to shut the door on him."
In Southampton, fans have largely welcomed Redknapp's arrival.
"It's come as a little bit of a surprise," said Southampton Independent Supporters Association chairman Nick Illingsworth.
"There is a bit of smugness - most Southampton fans would relish the thought of Harry keeping Southampton in the Premiership while Portsmouth are relegated.
"But we're all football fans and if Gordon Strachan had gone to Portsmouth, I would have felt sick, so I do sympathise with them a little bit."
Illingsworth added that change was needed at Southampton.
"Unfortunately Steve Wigley wasn't experienced enough to tackle the job - one win in 14 games is not acceptable," he said.
"Harry Redknapp is an experienced manager who is proven in the Premiership - both at Portsmouth and West Ham."