Liverpool manager Brendan Rodgers has revealed the full extent of the shoulder injury sustained by Philippe Coutinho against Swansea on Monday, with the Brazilian forced to undergo surgery to correct the problem.
Coutinho was involved in a collision with Swans defender Ashley Williams in the 2-2 draw at the Liberty Stadium, and will be unavailable for selection for at least six weeks.
Liverpool had hoped that the initial diagnosis would be that Coutinho had suffered nothing more than bruising to the bone, but Rodgers explained on Thursday how the bone had excruciatingly pierced the muscle.
This has prompted Coutinho's recovery time to be extended as he recuperates from the surgical procedure to correct the issue, and Rodgers admits the 21-year-old's absence will be a blow for Liverpool.
"He's only just having it today so the timescale from the medics is obviously up to six weeks," he told reporters.
"We wouldn't anticipate any sooner than that. It's unfortunate for him because he's been in great form since he came here in January.
"Hopefully we'll get him back sooner rather than later and then he can come into the group again.
"It was one where it was more the fall than the challenge. The challenge was probably a bit clumsy but it was actually more the fall that did the damage.
"In those scenarios the bone may be bruised but unfortunately for Philippe the bone came through the muscle. That's what the pain was and why the operation was needed.
"It's unfortunate because he was a really pivotal player for us in the game. When he went, we lost that connection between our midfield and the front line; it disrupted our balance a bit.
"These things happen in football. Hopefully he'll recover quickly and come back to us in good shape."
Coutinho has scored once and provided eight assists since he joined Liverpool for a fee of £8.5 million from Italian giants Inter during the January transfer window of this year.