2) Martin Skrtel
In our current 3-4-3 formation, Skrtel plays at the heart of a back-three, meaning he’ll be directly charged with stopping world-class Diego Costa form bagging. The Spaniard scored against us at Anfield back in November, and got the better of Skrtel on the day – but the Slovakian has seriously upped his level in recent weeks, and will be eagerly anticipating the battle.