Sunderland are keen on signing Queens Park Rangers defender Steven Caulker this summer, according to The Sun.

Sam Allardyce is looking to sign a new centre back for Sunderland and is now looking at the former Tottenham Hotspur defender, who is currently on loan at Liverpool from QPR.

Caulker made a big money move to Cardiff City for £8 million in 2013 after impressing during a loan spell with Swansea City the previous season.  Cardiff were relegated however and the defender joined QPR.

QPR also went down during Caulker’s first season at the club but he once again managed to remain a Premier League player, being loaned to Southampton in July 2015.

Caulker failed to impress at Southampton and was signed on loan by Liverpool in January 2016.  Despite being signed as defensive cover, Caulker’s first two appearances for the club were as a makeshift striker, coming on as a substitute with Liverpool losing the game.

Recently Caulker has been playing for the Liverpool Under-21 side, and a Sunderland scout was sent to watch the defender.

Caulker is not the first Championship defender that has interested Allardyce and Sunderland, with the club also being linked with Blackburn Rovers centre half Shane Duffy this month.