Another injury setback for Joe Gomez, joining Mamadou Sakho on the sidelines, has meant that Liverpool will start the season with only Dejan Lovren and Joel Matip as fit centre-backs.
Both Gomez and Sakho have the same injury – an Achilles issue – which will keep them out for at least a month.
Matip was injured in the pre-season friendly with Wigan on Sunday, but is not expected to be out for long. Reinforcements are necessary to make up the numbers.
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With Kolo Toure released, Martin Skrtel sold, and Tiago Ilori and Andre Wisdom simply not good enough (expect them to move on), Jurgen Klopp is quite rightly expected to dip into the market for a central defender. But who should he target?
The Crystal Palace defender is known to be a Liverpool fan and would deliver quality at both ends of the pitch at set-pieces, something Liverpool struggle with year on year.
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He also has Premier League experience, and is very much a known quality.
Dann would relish the chance to make the move, but would cost quite a large sum, probably close to £20 million in this inflated market.
He has also been linked with Everton frequently, and could start a bidding war which Liverpool would certainly want to avoid.
Rickie Lambert is proof that a dream move does not always come off as planned, but Dann could be worth exploring, he has caused Liverpool enough problems over the last few meetings with Palace to suggest that he can do a job.
Bayer Leverkusen’s young centre-back was in the Germany squad for the European Championships this summer, having replaced the injured Antonio Rudiger, but did not play a game.
Certainly one for the future, as well as plugging the gap in the here and now, he would not come cheap, costing more than £20 million in all likelihood, he would be a surprise choice but has undoubted quality and potential.
If he were to sign, it might turn out that he would become first-choice instead of someone like Sakho or Lovren over the course of the season; not necessarily a bad thing, but equally centre-back was not a position that Liverpool were looking to address this summer.
They were not anticipating having to sign someone there – it might be better to use the budget elsewhere if possible. He would add strength and height to a team that lacks power and physicality, and would be a good, if costly, addition.
The affable and popular Ivorian defender was released at the end of his contract after the Europa League final in which he played so well.
At the age of 35, he represents a short-term option, but would cost nothing and in this case short-term is not necessarily a bad thing; Liverpool do not want to sign someone who will get in the way of Gomez's progression when he returns.
Toure was a popular player in the squad and amongst supporters, so would be welcomed back no doubt, but whether he would want to return to play for a club so soon after being told he was surplus to requirements is the main question.
He also might consider the fact that, as it stands, he has left on a high following a relatively successful season on a personal level, and may not want to taint that by coming back for more.
All three options are worth exploring, and each has its merits, but which one do you think Liverpool should go for?