Attack
Kemar Roofe (Right-wing) – One of the goalscorers against Burton, he looks in great touch right now. The 24-year-old scored a long-range curling effort and should be looking to chalk up another on Tuesday night.
Samu Saiz (Centre attacking midfielder) – He has made a colossal impact following his summer arrival and works perfectly in the number 10 role.
Pablo Hernandez (Left-wing) – The creative maestro has cemented his position in the XI and should cause the Birmingham defence all sorts of problems. He scored a penalty against Burton and looks in great confidence.
Pierre-Michel Lasogga (Centre-forward) – His inclusion means that Christiansen should stick with the exact starting line-up that breezed past Burton. The striker played a big part in that win with two debut goals and should once again spearhead the attack. However, with his partner due to give birth in Germany soon he may have to be a late withdraw, but if available he must start.