Jurrien Timber, Josko Gvardiol and the centre-backs Liverpool should be targeting in the summer transfer window

Midfield is not the only thing on the agenda for Liverpool heading into the summer transfer window. While it is widely accepted that the Reds will - and need to - strengthen their engine room, defensive reinforcement could also be required for Jurgen Klopp.

With Joel Matip's future uncertain - sources have told GOAL the 31-year-old is increasingly likely to leave at the end of the season - and with Joe Gomez having endured a testing campaign, there could suddenly be a need for a new centre-back at Anfield, one capable of challenging, and eventually succeeding, first-choice Virgil van Dijk in the coming years.

But who is on the radar? GOAL takes a look at a few potential candidates...