Kieran Gibbs
With Alberto Moreno not having been an overwhelming success at Anfield this season, Kieran Gibbs would represent an upgrade and may pique the interest of Brendan Rodgers.
The England international might also be receptive to a move, having been pushed out of contention by Spain defender Nacho Monreal for the latter part of last season.
At 25, there is also an argument that can be made that the Lambeth-born defender still has his prime ahead of him, and Liverpool may be the ones to capitalise.