Virgil van Dijk is yet to undergo surgery on his right knee.
The Reds captain hobbled off after a rash challenge by Everton goalkeeper Jordan Pickford in a 2-2 draw in the Merseyside derby on Saturday.
He has damaged the ligaments in his right knee and Liverpool has not given a timeline on how long their captain will be out for.
Shaun O’Brien, a fellow of the Royal College of Surgeons informs recoveries from ACL surgeries should not be rushed.
“The average person is normally out for at least nine months before they get back to playing the sport that they want to do,” he told the PA news agency.
“Even the elite sportsmen might be starting to train or play some reserve games at the six or seven-month mark but it’s nearly always a good year before they’re back starting a game and being confident with their knee.
“It just takes a long time to settle down and build up their strength, control and coordination.”
He added: “Contralateral injury is more likely to occur than you re-rupturing the same one. The re-rupture rates vary but it’s probably in the region of a three to five per cent chance that it could re-rupture.”