Liverpool have signed central defender Steven Caulker on loan until the end of season from Championship side QPR.

The 24-year-old, capped once by England, was on loan at Southampton - but that agreement has been cancelled to allow him to move to Anfield.

He is eligible to face Arsenal in the Premier League on Wednesday.

Liverpool have been hit by a succession of injuries to central defenders and boss Jurgen Klopp said Caulker is the "best solution" for the club.