Assistant boss Pep Lijnders says it is "absurd" that Liverpool must play two games in four days given the number of Covid-19 cases and injuries at the club.
Premier League clubs chose to fulfil festive fixtures at a meeting on Monday despite a rise in Covid-19 cases.
"We love the intensity but we all have to respect recovery," said Lijnders.
He added: "We think it is absurd we have to play after 48 hours. It's a much higher risk of injury.
"You'll have to ask the teams why they want to play. With the Covid cases being this fresh, it'd make sense to have more time before the next game.