Danny Cowley is not willing to compromise in his desire to build a Pompey squad that can secure success next season.
The only summer arrival so far has been teenage full-back Liam Vincent from National League outfit Bromley.
And with several players departing the club following the conclusion of the 2020/21 campaign, there are plenty of spaces to fill.
But Cowley does not want to rush into any decisions and is willing to bide his time to capture his targets.
The Blues boss said: “We’re working really hard as a football club – a lot of that in terms of recruitment of both players and staff.
“It’s about finding a model, with a good understanding of the club, how we want to play and the DNA of this city.
“The people here have a real resilience, grit and determination, so we want to find players with those qualities.
“If we do then we can find a connection with our supporters, who are so important for our success here.
“We have specific requirements for each area and know exactly the characters we want to bring into the building.
“The next stage is to filter to that down, so there’s maybe five players for each position that are available to us.
“I’ve been a football supporter myself and I suspect that some will be getting frustrated at the time it takes.
"We have specific requirements for each area and know exactly the characters we want to bring into the building."
“I have to take criticism for that because we do like forensic detail and that takes a huge amount of human resource.
“But we want to make sure we’ve got exactly the right characters to help this football club moving forwards.
“I’m quite fussy and know exactly what I want, so I’m looking for that perfect fit. In May and June, I’m not willing to compromise on that.
“We know that better value comes later, so this period has been about gathering information to make some intelligent decisions.
“We’re looking for a balanced squad, including promising youngsters with real potential and ready made players with the technical and tactical abilities to compete at this level.
“But we also want people who can take this club to where it wants to go, while adding experience and leadership.
“Michael and the board have been nothing but brilliant since the moment we came in, giving us complete clarity and unconditional support.
“We’re working every minute of every day to build a team that the people of Portsmouth can be proud of.”
Cowley is looking forward to cheering England on at the delayed European Championship, which is about to get underway.
He said: “It’s out first game against Croatia on Sunday and we wish Gareth Southgate and the team nothing but success.
“It has been a long time since we’ve won anything as a country at that level, but it’s an exciting squad and if you get through the group, then anything is possible.”