Klopp's side will look to overturn a one-goal deficit from the first leg after Adrian Lopez struck in stoppage time to give the La Liga club a slender advantage going into tomorrow's game.
Klopp told reporters at his pre-match press conference, as reported by the Liverpool Echo, that there is no real pressure on his side, but has said it is an opportunity to win a trophy in a 'difficult' season, and he doesn't seem to be too concerned about the late goal they conceded at El Madrigal.
The Liverpool boss said: “A lot of people thought we could have done more (in the first leg), but if we had been more offensive we would have opened space for them. In other games they have more chances.
“It wasn’t a good result, but a good feeling.
"We have to know about the game, not with pressure, only with joy.
“It’s only playing football. Football is a fair game. If we play our best then we can go to the final.”
Klopp would not be drawn on to confirming whether or not Daniel Sturridge will start tomorrow night's game at Anfield, as there were many laughs when the inevitable question was asked.
Sturridge was an unused substitute in the first leg to the surprise of many, but with Liverpool now trailing in the tie, there is a feeling that this is the game for him to play from the start.
He added: "I was waiting for this question. He could be, 100%, but I've made no decision yet about the line up.
“In all these thoughts, Daniel Sturridge is absolutely involved.”
As expected Klopp spoke glowingly about the atmosphere and the effect it could have on the side tomorrow night and despite being 1-0 down from the first leg, the German was again keen to emphasise that it's only half time in this tie.
He added: "If they wouldn’t have celebrated something would have been really wrong.
"All I thought was ‘half-time’ - they have to come to Anfield.
“I am still feeling this. I feel more the chance than I am afraid of something.”