Steve Cotterill is closing in on a replacement for Ian Woan.
Pompey’s first-team coach left on Friday to become assistant manager at Watford.
Cotterill has yet to decide whether to appoint an assistant or first-team coach to fill the gap left by the Woan’s departure.
But he has identified a candidate to join his backroom.
And Cotterill is hopeful of unveiling him before the week is out.
The Blues boss is looking to contact the unnamed target today and believes he would be an ideal recruit.
Cotterill said: ‘I will be making a phone call to somebody asking him to come in for a chat.
‘I have known him for a long time – he’s a good coach and a good man.
‘Truthfully, l haven’t had time to contact him yet, there have been other priorities.
‘All of a sudden, everything is getting busier and my time is getting stretched.
‘So I think it’s important I make that phone call sooner rather than later.
‘I don’t quite know whether he would be an assistant or a coach at the moment. I would need to see where he would be at.
‘The only thing is I haven’t worked with him before.
‘I’ve only been on courses with him but we have known each other for a long, long time.
‘I have stood back and looked at some of the work he has done and just think he is a really top guy.
‘I have done my homework on him behind the scenes, at clubs he’s worked at and spoken to a few of the players I know have played under his coaching.
‘It depends on how positive the chat goes.’
Woan spent four years at Fratton before opting to link up with close friend Sean Dyche at Vicarage Road.