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Jurgen Klopp believes Liverpool midfielder Adam Lallana is finally ready to put an injury-plagued season behind him.

The Reds boss is considering whether to recall the England international for Tuesday night's Champions League clash with Porto at Anfield.

Lallana, who came off the bench in the recent Premier League wins over West Ham and Newcastle, hasn't started for Liverpool in Europe since the 2016 Europa League final.

It's been a desperately frustrating campaign for Lallana, who made his comeback in November after four months out with a thigh injury before suffering a fresh setback.

"Adam is important for us," Klopp said. "Yes, there is competition but for Adam that's usually not a problem for him. He needed only time.

"Life is to learn from your mistakes and we all have to learn. We made a mistake (playing him) when he looked fit but wasn't.

"Maybe two little setbacks, not the biggest setbacks, but in and out, in and out, and that makes no sense. So now we have to build with him. He is coming closer and closer.

“Of course now he has no rhythm but we still need him, we will use him still. He is cool, he sees the quality of the team is good.

(Image: Andrew Powell/Liverpool FC via Getty Images)

"He is always one of the guys who push the level in training on to the next level because he is always so intense in all the things he does. The time will come for him 100%."

Klopp won't finalise his side until Tuesday morning but James Milner, Joel Matip, Alberto Moreno and Joe Gomez are also eyeing a return to the starting line up.

The German coach revealed that Loris Karius is set to continue between the posts.

"I haven't spoken to John (Achterberg) yet but I think so. It is a good moment for him so probably yes," Klopp said.

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"They are all desperate to play to be honest. When I said we will not rest any players I was thinking more that we will bring the best team we can have for this game. That's the respect you have to show, anything else leads to more problems.

"If we change a few things then it is to win this game not because we play Manchester United (on Saturday). We've had a few problems since the weekend with a few knocks.

"It is not that we could change 10 players. We will make a line-up, play the game with all we have and then think about the next one."

Klopp must decide whether to unleash 32-goal top scorer Mohamed Salah on Porto. With the Egyptian winger in the form of his life, does he need to keep playing to stay in the groove or would he benefit more from a breather ahead of the trip to Old Trafford?

(Image: Andrew Powell/Liverpool FC via Getty Images)

"I don't think there is a 100% answer," Klopp said.

"Either could be okay. Playing Saturday and Saturday there is rhythm in that so we could say that is okay.

"Does he need a Tuesday game for rhythm? I'm not sure. Does he need another game for confidence?

"I haven't decided so far. I will have a few talks with the boys, but it won't be 'do you want to play or not?'

"Whoever lines up will be 100% fit. I will need six more on the bench who can also make the difference for us in a positive way."