Liverpool manager Jurgen Klopp has raised doubts over his long-term future at Anfield.

Klopp faces the biggest crisis of his five-year Liverpool reign ahead of Sunday's FA Cup fourth-round blockbuster with Manchester United.

Klopp said: “I deal with the pressure I put on myself my entire life, so I am used to that.

“It is really difficult to make me really happy in the long-term with something.

“Short-term, I am quite easy to excite but then in the long-term it is not easy."