The Blues currently have two stoppers contracted for next term with Alex Bass and 17-year-old Toby Stewart the only pair, while Ollie Webber’s short-term contract is up.
And with Bazunu returning to Manchester City following his impressive stay, that could prompt Danny Cowley to look elsewhere
We’ve taken a look at 15 keepers across the Championship, League One, League Two and Scottish Premiership whose deals expire in the summer that could catch Pompey’s eye.
Here’s what we’ve found...
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1. Dean Bouzanis
Club: Sutton; Age: 31; 2021-22 appearances: 44; Clean sheets: 17; Goals conceded: 49 Photo: Alex Livesey

2. Viktor Johansson
Club: Rotherham; Age: 23; 2021-22 appearances: 23; Clean sheets: 11; Goals conceded: 17 Photo: George Wood

3. Joel Coleman
Club: Rochdale; Age: 26; 2021-22 appearances: 21; Clean sheets: 7; Goals conceded: 23 Photo: Charlotte Tattersall

4. Lee Burge
Club: Sunderland; Age: 29; 2021-22 appearances: 9; Clean sheets: 2; Goals conceded: 11 Photo: Lewis Storey