Chelsea have struggled this season without their main man in the middle Nemanja Matic and he is arguably a bigger loss than someone like Diego Costa who they beat Spurs without at Stamford Bridge earlier this season.
That being said, the Blues have the players to navigate the loss and can look towards Ramires and John Obi Mikel who are more than used to playing in big finals and can certainly put a shift in to help their side.
It is not ideal but Mourinho will just use the situation to create a siege mentality and work it to his advantage.