The trio missed Thursday’s double session at Melwood due to sickness, though Virgil van Dijk was involved once again after missing Sunday’s victory over Manchester City due to a hamstring complaint.
Klopp told Liverpoolfc.com: “Virgil was back yesterday and completely fine. We have a few problems with players feeling ill or unwell.
“Raggy was out, but hopefully back today. Dejan was out. Mo Salah was out, but hopefully back today.
“Mo and Raggy are on the good side of it already, but with Dejan we are not 100 per cent sure [if he will be back today].