By North-west correspondent Alex Stevens

Liverpool have made contact with QPR about signing Steven Caulker on loan until the end of the season, Football Insider sources understand.

The Merseysiders have targeted the centre-back, 24, after an injury crisis left Jurgen Klopp with no fit senior defenders to face Exeter in the FA Cup last Friday.

Caulker is currently on loan at Southampton but has barely figured for Ronald Koeman’s team, where he is behind regular pairing Jose Fonte and Virgil van Dijk in the central defensive pecking order.

A Liverpool source has told Football Insider that Jurgen Klopp has sanctioned a move for Caulker to plug a hole in his under-manned backline.

The England international’s Saints loan deal would need to be cancelled for him to move to Anfield for the rest of the campaign.

Klopp was forced to field left-back Jose Enrique and rookie Tiago Ilori as a makeshift centre-back partnership in Liverpool’s 2-2 draw at Exeter after injuries left him without Martin Skrtel, Dejan Lovren, Mamadou Sakho and Kolo Toure.

Loan ranger: Liverpool want to sign Steven Caulker on loan from QPR

Loan ranger: Liverpool want to sign Steven Caulker on loan from QPR

Speaking at his media briefing on Monday, the Merseysiders’ boss said he is hopeful Sakho and Toure will be fit to face Arsenal in Wednesday’s Premier League clash at Anfield.

“I think Kolo will be available, so we will have a senior centre back,” he said. “Mama (Sakho) wants to be available so we will see if we can use him. Martin (Skrtel) is still a few weeks, Dejan the time of injury is only 6 days, something like 8 or 12 maybe (before he can return), so it’s close.

“There will be a moment where we can risk if we try, but it’s not a moment for this yet. “We have to look at Kolo and Mama and the next one is Lucas, so three senior.”