Jurgen Klopp and Liverpool are supposedly interested in Real Betis and Spain Under-21 star Junior Firpo as a solution to their lack of depth on the left.
The Reds are likely in the market for a left back this summer following the departure of Alberto Moreno on a free transfer.
While Liverpool youngster Adam Lewis has been tipped to make the step up to the first team from the academy, Robertson is currently the only remaining senior left back at the club.
According to Catalan daily SPORT, the Champions League winners have identified 22-year-old Junior as one name to beef up their full back options.