Liverpool currently have four positive cases of COVID-19 in their first-team squad, which leaves Jurgen Klopp playing a waiting game during a busy schedule.
The Reds are, like almost every other club in the Premier League, struggling with a heightened pressure on their personnel in the festive period.
With the new Omicron variant of COVID-19 spreading rapidly throughout the UK, it is no different among elite footballers, regardless of their vaccine status.
Klopp has revealed that every player in his senior squad has received their second jab, with many of those also having now been given the booster, while the same applies to staff.
But what do we know about Liverpool’s situation with COVID-19, and when could those players who have tested positive return to action?
When and how are Liverpool testing?
The club are currently testing players and staff daily before they are granted access to the training ground in Kirkby.
If a positive lateral flow test is returned, access is denied to avoid any further spread throughout the squad.
On the eve of fixtures, players and staff undergo a PCR test, with those results revealed on the morning of the game in question.
That is why Liverpool have so far revealed cases shortly before team news is announced.
Who is currently out?
When could they be back?
In that case, with positive cases requiring a 10-day isolation period after the day of the test, the earliest fixtures for those four players to return are as follows:
However, their isolation could be extended if they begin to show symptoms, while they are likely to require extra training time before they are used.
What has Klopp said?
Speaking ahead of the clash with Tottenham on December 19, Klopp called for more transparency from other clubs when it comes to who has tested positive:
“At Manchester United, I heard a number of players [who tested positive]. I have no idea who are the players, I have no idea who had the virus at Tottenham.
“Is it necessary to know who or how many? Knowing nothing is quite strange.
“I just don’t think we have anything to hide. Our first and most important concern is that the boys are healthy,” Klopp added.
“So if someone has the flu and you ask me, I say he has flu. If somebody has a broken toe, if I know it I say he has a broken toe.
“I know it’s difficult because one is a pandemic and one is an individual injury but we have to find a way to get through all this and I think the exchange of information is pretty helpful.”