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Rewind to August and full-back was viewed as an area of concern in the Liverpool squad.

Now it's one of genuine strength with Jurgen Klopp delighted by the form of "street kid" Trent Alexander-Arnold and fans' favourite Andy Robertson.

With Joe Gomez and Alberto Moreno waiting in the wings and Nathaniel Clyne back fit, the manager has an abundance of options in that department.

Clyne, who has missed the entire season with a back injury, made his comeback for Liverpool Under-23s in their 4-0 win over Stoke City on Sunday.

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

"It’s an unbelievably important position," Klopp said.

"It is one of the most important in world football because they were defenders but now they are sometimes defenders and sometimes attackers.

"Clyne is the most experienced one but was injured. He has speed, technically good, he is not really an offensive player, but he protects well and helps a lot in defensive moments.

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

"Joe Gomez is coming from the centre more, he will in the future play there. He has to improve but is more the defensive part for a full-back.

"Then there is Trent, who is very offensive orientated, fantastic crosses, good footballer. He has this little bit of street kid. If you see the crosses, they are a little bit dirty. They are not only crosses *makes a pop sound* but he does it."

(Image: Clive Brunskill/Getty Images)

Moreno returned to action last month after an ankle injury but he hasn't been able to win his place back with Robertson a model of consistency. The Spaniard had to settle for a late cameo in Saturday's 4-1 win over West Ham.

"On the other side you have Robbo and Alberto. Alberto is in outstanding shape, so he puts pressure on Robbo," Klopp added.

(Image: James Maloney)

"Robbo needs to adapt in the first moment that Alberto comes back and it’s like ‘wow’. Even the players see that the other one is a good one.

"I think it was one game that Robbo struggled a little bit, we had a little chat, not too much but it was ‘stay cool, all is good, we need both of you, everything is fine’.

(Image: James Maloney)

"Then he played the Porto game and that helped him. He was really good again against West Ham and Alberto deserved a few minutes.

"It is difficult. If Robbo has the flu tomorrow and we don’t have Alberto in good shape then it wouldn’t help us. This is the kind of battle between the players we need."