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(Image: GETTY)

The account, which has over 13,000 followers, posted a video of Karius making a mistake in the recent 3-1 International Champions Cup defeat to Borussia Dortmund.

With the score at 0-0, the German goalkeeper presented the ball to an opposition player while far outside his penalty area.

The Dortmund player's shot rolled harmlessly wide but Karius' lackadaisical clearance enraged the social media user.

"Thank god we've got @alissonbecker," the fan account wrote. "It's becoming a regular thing for @lorisk21.

"I seriously believe that we should sell him because even as a backup he's just full of mistakes.

"I don't care what anyone says but he is not worthy of wearing the LFC shirt.

"And this is for all the mistakes he makes in general for the ones thinking that I'm slaughtering him just for this..."

But the account's owner probably didn't expect Liverpool star Dejan Lovren to leap to his team-mate's defence.

The Croatian himself has been the victim of so-called trolling on social media himself previously.

Lovren was even subjected to death threats via Instagram last year after a series of under-par performances.

(Image: INSTAGRAM)

"You are full of sh*t," replied Lovren's official account.

"Shame on you how you treat our player! And also the name Liverpool fan page."

Liverpool beat Manchester City 2-1 in the International Champions Cup last night, with Mohamed Salah and Sadio Mane scoring the goals.