That’s after the shambolic events of Wednesday night, as Stoke battered the Blues 6-1 on a night of shame at the bet365 Stadium.
Mousinho has branded the showdown at Fratton Park a ‘must-win’ match in the wake of what unfolded against the Potters, but how does he go about it?
There’s some big calls for the Pompey boss to make with plenty of players under spotlight - this is how we think he will go.
1. Pompey predicted line-up
Pompey will be making changes for Oxford United after the Stoke City debacle. | Jason Brown/ProSportsImages
2. GK: Nicolas Schmid
It's time for the new boy. Will Norris' horror show at Stoke means there's every chance the Austrian will get his chance with changes promised by Mousinho. Photo: Jason Brown
3. RB: Jordan Williams
Been usurped by Swanson who'd impressed until Pompey were battered down their right flank on Wednesday. That points to Williams' return who'd started the season as first choice at right-back. Photo: Jason Brown
4. RCB: Regan Poole
Would have demanded more of himself at Stoke after two impressive starts since return. Mousinho has backed the Wales international to start three games in a week after 10-month lay-off. | Jason Brown/ProSportsImages