But sources close to the deal have informed us that any unveiling has been put back to allow the 23-year-old to concentrate on a family matter.
Dale will now not make his Blues debut in Saturday’s Fratton Park fixture against Lincoln – Pompey’s first home game of the new season.
The George Hirst conspiracy theories that had Portsmouth Twittersphere in meltdown – and what is next for Leicester front man also wanted by Ipswich
'I don't think I realised how much it would mean': ex-Cardiff City and Bristol City man's Portsmouth admission as he chases winning Fratton feeling after homecoming
Latest: Key development in Portsmouth's attacker pursuit as Danny Cowley puts finishing touches to squad
Former Portsmouth, Sunderland and Millwall ace Aiden O'Brien suffers setback as frustrating start to life at Shrewsbury continues
How golden boot odds have shifted for Portsmouth, Ipswich Town, Plymouth Argyle, Bristol Rovers and Peterborough United front men after start to season
Although yet to be officially confirmed by the club, the 23-year-old’s arrival takes Pompey’s recruitment drive for the summer up to 10.
Earlier today, Tangerines boss Michael Appleton said he would not stand in the way of certain players on the fringes of things at Bloomfield Road from departing – including Dale.
The Blues’ next game after the visit of the Imps is against Cardiff in the Carabao Cup on Tuesday night.