Sean Raggett, Michael Jacobs and Callum Johnson were all brought in on permanent deals, while Cameron Pring and Rasmus Nicolaisen were signed on loan.
The Blues were keen to add to that number, with a late move for Millwall’s Ben Thompson falling short as the transfer window loomed.
Meanwhile, another striker remained on their radar, despite no movement in that department either.
Throughout the summer, front men like Niall Ennis, Matty Taylor and Kevin Nisbet were mentioned as potential suitors to compete with John Marquis and Ellis Harrison.
However, as you know none of them made it to Fratton Park.
In fact, a total of 22 players were linked with a Pompey switch over the summer without completing a transfer to the south coast.
We look back on who these players were and where they eventually ended up if the Blues were not an option.
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1. Mateusz Bogusz
Earlier this month Pompey had reportedly contacted Leeds regarding their Polish under-21 international. They apparently faced competition from Swindon and Gillingham for the 19-year-old but none of the three landed him. Instead, the youngster joined second tier Spanish side UD Logrones on a season-long loan. Picture: Will Russell/Getty Images Photo: Will Russell
2. Niall Ennis
The promising young Wolves forward was on the Blues’ hit-list to bolster their attacking resources. A deadline day move was mooted but the 21-year-old ended up heading to Burton on loan. Picture: Alex Burstow/Getty Images Photo: Alex Burstow
3. Charlie Mulgrew
The Blues were considering a move to land the veteran Blackburn defender back in August. However, negotiations failed to progress with the Scottish international. The 34-year-old completed a season-long loan move to Fleetwood on deadline day and made his debut in their goalless draw with Lincoln on Saturday. Picture: George Wood/Getty Images Photo: George Wood
4. Ben Woodburn
In August, reports suggested Pompey were interested in the Liverpool attacking midfielder, who was on loan at Oxford last term. However, the Wales international joined Blackpool instead - but wasn't signed in time to feature against Crewe at the weekend. Picture: Alex Livesey/Getty Images Photo: Alex Livesey