Goalkeeper Will Norris became the first arrival at Fratton Park as he penned a three-year deal with the Blues.
He was soon joined by central defender Conor Shaughnessy, who completed a free move from Burton – signing a two-year deal.
Indeed, 18 names have been linked with a switch to PO4 as John Mousinho continues his preparations for a busy period in the market.
With players being continuously tipped with a move to the south coast, we’ve taken a look at how Pompey could line-up if the rumours were true.
Here’s how they would shape-up.
5. CB - Ryley Towler
The youngster arrived in January and impressed in the centre of defence during the second half of the season. It’s expected he will continue to be a first-choice option for Mousinho after featuring 20 times under the head coach following his appointment. Photo: Jason Brown
6. LB - Connor Ogilvie
The left-back had his 12-month option on his deal taken up at the end of the season after an impressive run-in under Mousinho. The defender missed just one of the head coach’s 23 games in charge and has added plenty of attacking threat to his game. Photo: Jason Brown
7. CM - Marlon Pack
Pack remains a firm favourite with Mousinho and was given the captain’s armband during Clark Robertson’s spell on the sidelines. The Blues do want to add more numbers in the centre of the park but the ex-Cardiff man remains a strong part of the head coach’s plans. Photo: Jason Brown
8. CM - Joe Morrell
After a fantastic season on a personal level, he has been tipped with a switch to the Championship. Although he’s stated he wants to play second-tier football, he is adamant he wants to achieve it with Pompey. Photo: Jason Brown