The long-term injury to Jose Enrique left the Reds short at left back last season, pushing either Jon Flanagan or Glen Johnson into roles away from their usual right back positions. Loanee Aly Cissokho was a failure and will now return to Valencia, meaning manager Brendan Rodgers must look to sign a left back this summer.
For some time, it has been speculated that Spanish youngster Morenois Liverpool's primary target having impressed with Sevilla over the last two seasons, and whilst a £20m deal looked close last week, the deal has now stalled – prompting many to believe that the deal is dead.
With an agreement looking unlikely, Rodgers needs to turn his attentions elsewhere, and speculation suggests that the impressive display of Wolfsburg's Ricardo Rodriguez for Switzerland in their clash against Ecuador had triggered interest from the Reds – but there is another World Cup star who could be on Rodgers' shopping list.
Argentina's Marcos Rojo started at left wing back for Alejandro Sabella's men against Bosnia on Sunday night, then reverted to a regular left back role at half time after substitutions were made. In fact, the Sporting Lisbon star even plays at centre back for the Portuguese side, and his versatility has attracted interest from a number of teams of the course of the last year.
Arsenal, Manchester United and Ligue 1 side Monaco have also been linked with moves to sign the former Spartak Moscow defender, who made the headlines in Brazil on Sunday after this incredible rabona clearance whilst under pressure from Bosnian attackers.
It's hardly the most conventional way of defending, and Liverpool fans would no doubt rather he dealt with any danger in a safer way, but it shows the confidence and technical ability that Rojo has, and with a £12m bid reportedly in the pipeline, the Anfield faithful could see what the 24-year-old can do on a more regular basis.