Jamie Carragher says Liverpool cannot "trust" Joel Matip to stay fit this season - but don't need to sign a new centre-back.
Both Matip and Joe Gomez are currently out of action for the Reds, and missed Liverpool's 2-0 win over Chelsea on Sunday.
Brazilian midfielder Fabinho filled in at centre-back, but put in a man of the match performance in the less familiar role.
Fabinho proved to Klopp he is more than playing at the back when need be.
And with Jurgen Klopp needing to find a place in his team for new signing Thiago Alcantara, Carragher believes the German may have found a new permanent role for Fabinho.
"There's been talk of Liverpool maybe needing a centre-back," Carragher told Sky Sports.
"Lovren has left and Joel Matip you cannot trust fitness-wise, and that just leaves Joe Gomez.
"I thought he [Fabinho] was outstanding [against Chelsea].
"Normally players who play in the centre of the pitch, certainly a holding midfield role and they fill in for people at different times, they read the game really well.
"They have a great understanding of the game.
"At times watching Fernandinho play that position for Man City, I thought he was excellent, at times last season and he [Fabinho] was just brilliant today.
"I think that puts to bed any thought Liverpool may have had in needing another centre-back because they've got so many midfield players, and in some way, they have got to get them games. He was outstanding."
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