Georginio Wijnaldum suffered a muscle injury in Saturday's 2-0 win over Watford.
The midfielder was taken off 59 minutes into the Premier League clash at Anfield and Jürgen Klopp confirmed post-match Liverpool must wait to discover the extent of the issue.
“Muscle. I don’t know anything else,” said the manager when asked for an update on Wijnaldum at his press conference.
“[Whether he can travel to Qatar] is actually in the moment one of my smallest concerns – he could probably fly – but my problem is more what exactly the injury is and I don’t know that yet.
“It’s a muscle thing and you never want to have a muscle injury.
“But in these moments it always makes it immediately more difficult, but it’s not only us, all other teams have the same problems. We have to deal with these situations, that’s clear.
“We will see – tomorrow we know more.”