Steve Cotterill has backed Brighton to gain promotion and relive past glories.
The Pompey boss believes his team's opponents in tomorrow's south coast FA Cup showdown are a club on the rise.
The Blues face a tough trip to the Withdean to face a side unbeaten on home soil in the league this season.
Cotterill is certain they will celebrate their move to a new home at Falmer with promotion to the Championship.
He said: 'I went to see Brighton the other week against Charlton.
'They've had a few bob to spend, which helps at any level, but you still have to spend it well.
'I saw Gus at the FC United game. He's done a great job.
'It's a big club Brighton, I don't think people realise that.
'When the Goldstone was full and rocking it was a tough place to go. I can see them getting back to that.
'When they get to their new stadium next year it will be wonderful.
'(Brighton chairman) Mr Bloom down there has financed that and there has been a lot of work down the years by (ex-chairman) Dick Knight on that front.
'It's a good opportunity for them to climb up the pyramid when they get that new stadium because it's a good club.
'I don't think there's added spice in this game.
'I'm sure it will be a good game because they are a good team and they will get promoted this season, for sure.'
Pompey will again be short of numbers as they travel along the A27 and begin their campaign in a competition which has brought them so much joy in recent years.
Cotterill said: 'At this moment we have 15 players. We've had a couple not train, like Dave Kitson, who have knocks from last week still.
'Ricardo (Rocha) has not trained. I wouldn't think he'd be fit.'
Cotterill admitted he is wary about another run in the grand, old tournament with his squad currently unable to sustain the rigours of a league campaign.
He said: 'It would be fantastic to go on a run.
'But we have to be careful because cup runs bring fatigue, suspensions and injuries.'