4) Toby Alderweireld (Atletico Madrid)
This 25-year-old, who can also play at right-back, is currently on World Cup duty with Belgium. Liverpool were believed to be interested in the player during his time with former club Ajax, but the defender elected to join Spanish champions Atletico Madrid last summer. However, he made just 12 La Liga appearances for Madrid last season, and is believed to be available again. His habit of playing long balls out of defence could detract interest from Rodgers, who prefers his defenders to play the ball out from the back.
