Using your example, last season it would be like missing Adrian & Brosque with Carney coming back from injury. Simon wasn’t a starter and would come in for Brosque and Adrian would be replaced by either Carney, Retre or Zuvela. That would still leave a bench of:
Cisak, Warland (3rd choice CB), 2 of Retre (2st choice LB/RB, 3rd choice DM/CM, 4th choice RW), Zuvela (4th choice CM/DM rookie), Carney (2nd choice LW/AM) & Charlie (3rd choice ST)
Optimal bench was: Cisak, Warland, Retre, Carney, Simon
We are currently missing Warland, Zuvela, Buhagiar & Siem. That means our bench is made up of:
Cisak, Calver (4th choice CB), Devlin (5th choice DM/CM rookie), DDS (2nd choice RW/AM), Charlie (3rd choice ST)
Optimal bench is: Cisak, Warland, Retre, DDS/Buhagiar, Brosque