Manchester United went down to a Virgil van Dijk header inside 15 minutes before Roberto Firmino looked to have doubled Liverpool's lead with a fine strike from inside the area.
However, referee Craig Pawson and VAR ruled the coming together as worthy of a free-kick, but Gary Neville disagrees.
"I don't think that's a foul,” said Neville. “I think he just dropped it. It’s soft.”
Ole Gunnar Solskjaer’s players were left incensed by the delay from the ref as home fans celebrated, with the Spanish goalkeeper booked for his protests.
Former Premier League title winner Chris Sutton, meanwhile, slammed United’s players for their angry reaction, suggesting they got physical with Pawson.
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"A lot of United players with their hands all over the referee,” he told BBC Radio 5Live.
“You just can't do that. They are furious about the decision."
Neville went on to suggest that United were lucky to only be 1-0 down going into the break, with Georginio Wijnaldum having a goal ruled out for offside.
He added: ”Manchester United are living dangerously. There's no composure whatsoever.
"Watching their back seven move up the field, you could see a little dejection."
Harry Maguire was also called out for failing to stop Van Dijk heading home from an early corner, with Roy Keane questioning his new role as captain before kick-off.
“I think [it’s a sensible choice],” Keane said on Sky Sports before the clash against Liverpool on Sunday.
“I’m always concerned when a new player comes to a club and is given the captaincy.
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“To me it doesn’t say a lot about the other senior players at the club.
“But he’s an experienced player, he’s a good age, he’s obviously going to be a regular in the team and he comes across as a pretty decent lad.
“He mentioned there about it’s always about the team, don’t be distracted by the captaincy, enjoy it,” he added.
“Obviously you don’t necessarily need the armband to be a leader but he seems very proud of it.”
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