The head coach has already expressed his interest in making summer swoops for Matt Macey, Owen Dale & Joe Pigott, who have starred since his arrival.
Not just that but the 36-year-old also has the task of determining who he wants to keep with 10 of his permanent senior men out of contract at the end of the season.
But as Mousinho looks to build his side for the next term, what are the chances of his current loan members remaining at Fratton Park?
We’ve taken a look at the 34 men who joined the Blues on a temporary basis since the Eisner era began in 2017 to see if any judgments can be made ahead of this summer’s talks.
Forgotten any of these names?
9. Damien McCrory
The left-back played just three times during his five-month loan spell from Burton during the 2017-18 season. McCrory joined Grantham Town in 2022. Photo: Joe Pepler
10. Ben Thompson
The fans’ favourite was key to the excellent start to the 2018-19 campaign, where he made 27 outings. He was recalled by Millwall in January 2019 and now plays for Peterborough. Photo: Daniel Chesterton
11. David Wheeler
The winger scored three times in 18 outings on loan from QPR before also being recalled in January 2019. Wheeler now features for League One rivals Wycombe. Photo: Joe Pepler
12. Joe Mason
A loan spell to forget for the former Wolves striker, who made just one outing from the bench in League One for the Blues. He returned to Molineux in January 2019 but is now without a club. Photo: Joe Pepler