Alisson Becker admits Liverpool will have no chance of ensuring a glorious finale for Jurgen Klopp this season unless they regain their mean streak - as he revealed his difficulties during a lengthy spell on the sidelines.

Alisson is expected to make only his second Europa League appearance of the season when the Reds aim to pull off a remarkable comeback in their quarter-final second leg here in Bergamo having lost 3-0 at home against Atalanta last week.

Klopp's side have failed to keep a clean sheet in their last nine games and go into the match at the Gewiss Stadium following back-to-back defeats after their Premier League title challenge suffered a major setback with a 1-0 reverse to Crystal Palace at Anfield last Sunday.

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But Alisson admits Liverpool cannot afford to be too downhearted by the recent blip in form while urging better defending as a team.

We have to improve our performances but if I was being more precise the things we have to do better are we have to go back to keeping clean sheets and scoring the chances we have, the clear chances we have in front of goal.

"I'm saying that because I trust a lot my strikers and defenders and I know the quality we have as a team.

If we attack and defend as a team then we can go back to winning games."

Of clean sheets, Alisson added: "We start from that.

Keeping clean sheets is the basis for a successful team, we did that in the past and the trophies we won we were solid defensive-wise.

"That's not only depending on the defenders but the whole team, we have to defend together and fight to get the ball back, close gaps, win challenges, block shots, stopping crosses, making difficult saves, we have to do that as a team, go back to get the clean sheets.

That's the basis for us, not only for tomorrow but for the rest."

Alisson was part of the Liverpool team that produced the greatest fightback in the club's history when they overturned a 3-0 first-leg deficit to beat Barcelona 4-0 at Anfield and clinch a place in the Champions League final five years ago.

But the goalkeeper has dismissed comparisons between that task and the one now facing Klopp's side.

We come here with a goal to improve our performance in respect to the last game and try to play better as a team, which we didn't do in the last match.