Mr Storrie, who was Pompey chief executive from 2002-2010, said he was acting as an ‘intermediary’ between the company and the club’s administrator Trevor Birch.
He said he was not in a position to reveal the identity of the interested business – citing a wish to remain confidential – but confirmed it was a firm currently involved in another sport.
But Mr Storrie added he would not return to Fratton Park if the company mounted a successful takeover.
It came as Mr Birch revealed he had been speaking to Mr Storrie over the formation of a consortium.
Speaking to The News, Mr Storrie said: ‘It’s not a consortium. It’s just someone I know who might be interested in the club. They want to remain confidential.
‘I’m advising the people who are interested and liaising with Trevor Birch with figures and going through them with him. I’m just an intermediary.
‘They are a company that’s already involved in sport – but not football. It’s an early stage.
‘We have got information to look at and it’s up to them to take it to the next stage.’
Mr Storrie said the club’s current problems spurred him on to approach the business, and added Pompey was still in his heart.
He added: ‘They are a big organisation but I cannot speak for what they would do or the money they would put into the club. They know they would need a fair bit of money to sort it out.’