Stuart Gray is set to become Pompey’s new first-team coach.
The 51-year-old has been brought to Fratton Park to replace Ian Woan, who recently left for Watford.
However, Steve Cotterill has opted not to have an assistant.
Gray was previously first-team coach at Burnley, but left in May following a reorganisation of his staff by manager Eddie Howe.
He has already taken several Pompey coaching sessions during training at Eastleigh.
Gray will be in the dugout alongside Cotterill at West Leigh Park tonight for Pompey’s first pre-season friendly in what is expected to be the only change to the Blues boss’ backroom staff for this season.
And Cotterill believes he is a worthy addition.
He said: ‘Stuart is going to be replacing Woany and will be there for tonight’s friendly.
‘I have known Stuart for a long, long time. He is a good organiser and a good coach.
‘He left Burnley a couple of months ago and I am really pleased to have him on board.
‘Stuart has been here a few days and fitted in very well. He’s got a spring in his step and made a good impression.
‘I think the lads have taken to him already.’
Gray spent 115 days as Southampton boss before leaving St Mary’s in October 2001.
He then had spells in the backroom staff at Villa, Palace and Wolves.
Gray returned to management in January 2007 at Northampton and was dismissed 20 months later after relegation to League Two.
Next he was appointed first-team coach at Burnley in January 2010, taking over as caretaker manager following Brian Laws’ sacking.
He left in May when Eddie Howe decided to shake up the backroom staff.