Jamie Carragher believes "it's crisis time" for Liverpool after their fourth straight Premier League defeat to Brentford.

Liverpool were beaten 3-2 on Saturday, which followed defeats to Chelsea, Crystal Palace and Manchester United.

Arne Slot has admitted Liverpool are yet to find an answer for teams utilising long balls and low blocks following the defeat to Brentford.

And former Liverpool defender Carragher agreed, stating that the Premier League champions need to improve their physicality in order to start turning the corner.

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Brentford outfought and outclassed Liverpool to earn a 3-2 victory over the Premier League champions.

Carragher said: "Losing four games in a row for Brentford would be a disaster. To see the champions do it with the expenditure in the summer means we're in crisis time for Liverpool right now. There will be a lot of serious questions asked in the dressing room between the players and the coaching staff and the people above the manager. When they've looked at what they've spent, they'll be looking for a lot more.

"Liverpool have to...