Hull City head coach Marco Silva says his side have to believe in themselves despite going into tonight's semi final with Manchester United 2-0 down.
Hull's preparations have been overshadowed by midfielder Ryan Mason's serious head injury and the pending departure of star player Robert Snodgrass.
Midfielder Mason is recovering in London's St Mary's Hospital following surgery on Sunday night to repair his fractured skull, sustained in the defeat at Chelsea earlier on the same day.
Silva, yet to confirm whether the club have received international clearance in time for Liverpool loanee Lazar Markovic to make his debut, said his main focus was on Mason's continued progress.
But the Portuguese added: "It's our obligation to think it's possible that we can play in the final.
The first result is good for our opponent, for Man United. It puts them in a more comfortable situation. But we will try. It's not easy because in the next 10-11 days we have four more games. At this moment, in many positions we need to do something - rotation is not easy for us, but we will try to rotate and do everything to put our team in a position to fight for the game.