Pompey will face stern competition in the race for promotion, with a number of their third tier rivals having already completed some eye-catching deals – which could prompt some worry. Scroll down and click through the pages to see EVERY deal completed in League One this summer so far:
21. Southend United
In: Brandon Goodship (Weymouth), Mark Milligan (Hibernian)
Out: None Photo: Tom Dulat
22. Sunderland
In: Conor McLaughlin (Millwall), Lee Burge (Coventry City), Ruben Sammut (Chelsea), Michael Collins (Everton), Ahmed Abdelkader (NAD Polis Chrysochous)
Out: Lamine Kone (Racing Club Strasbourg), Reece James (Doncaster), Luke Molyneux (Hartlepool United) Photo: Clive Brunskill
23. Tranmere Rovers
In: Stefan Payne (Bristol Rovers), Darren Potter (Rotherham United), Corey Blackett-Taylor (Aston Villa), Kieron Morris (Walsall), Sid Nelson (Millwall), Calum Woods (Bradford City), George Ray (Northampton Town)
Out: James Norwood (Ipswich Town), Ben Tollitt (Blackpool) Photo: Alex Livesey
24. Wycombe Wanderers
In: None
Out: None Photo: Jordan Mansfield