Former Leeds United boss Gary McAllister will be named as Portsmouth assistant manager on Tuesday.
McAllister, whose playing days at Leeds coincided with boss Paul Hart's time in charge of the club's youth academy, has been out of a job since December 2008.
The 44-year-old turned down an offer to become an assist to Scotland manager George Burley last week.
Bottom-of-the-table Pompey have yet to win a point this season in the league.
Brian Kidd left the role of Portsmouth assistant manger in August.