By North-west correspondent Alex Stevens

Jurgen Klopp has revealed he could buy a new central defender in the January window as Liverpool’s injury crisis grew on Tuesday night.

The Merseysiders’ casualty list lengthened to 12 players after Philippe Coutinho and Dejan Lovren suffered what Klopp termed “bad” hamstring injuries, while recalled Kolo Toure pulled up with cramp late on in the League Cup clash against Stoke.

Liverpool produced a fine display at the Britannia Stadium to win 1-0 in the first leg of the clash and take the advantage going into the second leg at Anfield on 26 January.

But Klopp was concerned afterwards at the growing number of players unavailable for selection as the team struggle to cope with a heavy schedule of fixtures.

The team is particularly hampered in central defence, with midfielders Lucas and Emre Can finishing the match at the back on Tuesday night.

Speaking at his post-match press conference on Tuesday night, Klopp ruled Mamadou Sakho out of Friday’s FA Cup third-round clash against Exeter, while Martin Skrtel and Lovren both have hamstring injuries.

Philippe Coutinho became the latest Liverpool player to break down with a hamstring injury

Body blow: Coutinho is set to miss Liverpool’s matches against Arsenal and Man United

The Liverpool manager admitted he may dip into the January transfer market to solve the club’s injury crisis.

“In this situation with no centre-backs fit I would say [transfers] is something we could look at,” Klopp said.

Asked how long Coutinho and Lovren will be out, Klopp told Sky Sports afterwards: “We had two bad injuries, I don’t know how bad. You watch longer British football than myself so you know what it means, usually.

“It’s a big shadow over the game for us, the injuries. I don’t know how serious and we have to wait for this.”