And there’s some big calls for John Mousinho to make as players return from injury and suspension at Fratton Park.
Here’s how we think the Blues will line up.
5. CB: Conor Shaughnessy
Looks like the starting spot on left side of central defensive pairing is now firmly the low-key summer arrival's place to lose. Photo: Jason Brown
6. LB: Jack Sparkes
With Connor Ogilvie back there's focus on who starts at left-back. Ogilvie has previously been the preferred option, but Sparkes - and his delivery from wide areas - has been a massive asset. Photo: Jason Brown
7. DCM - Joe Morrell
Has the captain' armband and nailed-on starting position with Marlon Pack sidelined. Photo: Jason Brown
8. DCM: Alex Robertson
A welcome return after his Port Vale suspension. Likely to return to the team, but the question is where? We've gone for alongside Morrell in a holding role. Photo: Jason Brown