"He's played in 69 games since the start of last season, more than any other player in the Premier League". It's so important. Hendo is very close, I think he will train full when we are back.
Liverpool midfielder James Milner told United Kingdom broadcaster BT Sport that Liverpool had problems "all over the field" in the first half and never properly recovered.
Winners of the European Cup in 1991, Red Star hadn't made it beyond the qualifying stages of the Champions League since the following year.
Liverpool ideally need to get a result with a tricky tie away in the French capital to come next before a potential qualification decider at home against Napoli at the end of the group.
"They had too many set pieces that's true and with one of them they scored", added Klopp.
"The atmosphere, noise-wise, was not a problem for us, but after the second goal they could smell it". We all have to deal with it.
It was Liverpool's third successive Champions League away defeat - the club's worst run in 39 years - and Klopp's side will travel to Paris Saint-Germain later this month before hosting Napoli at Anfield on December 11 in the final round of group matches.More news: Georgia Democratic Party Being Investigated for 'Cyber Crimes'
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Alisson could do nothing, however, as Marin swung in the corner and Pavkov rose above his markers to spark wild celebrations among the fervent 55,000 home crowd.
There was to be no way back for Liverpool as the Red Star fans celebrated a famous victory.
Sadio Mane had a great chance to give the visitors a lifeline, but failed to force the ball across the line from point-blank range.
Here's how to watch Red Star versus Liverpool online. Red Star drew 0-0 with Napoli in their previous home game.
Kosovo declared independence from Serbia 10 years after the bloody conflict between Serb forces and Kosovar-Albanian rebels.
The Reds soon took charge, though their luck in front of goal showed no sign of improving, as a deflected Robertson delivery hit the crossbar and Salah's 72nd-minute effort clipped the outside of the upright.