Former Liverpool defender Fabio Aurelio has lavished praise on current left back Andy Roberston.
The Scotland international has emerged as one of the best full backs in Europe.
And Aurelio believes there are little to no faults in Roberston's game.
Speaking on LFCTV's Legends in Lockdown show last week, the Brazilian said: "He's kind of the complete player because physically he's well capable of going forward and going back he defends very well.
"He's quick, so his one-v-one is good and defensively that's very important in the scheme Klopp plays. He goes forward very easily.
"One thing that calls my attention is that he's always improving, he's not comfortable in his situation being first choice. You will see that in every game he plays as his last one, so that's courage.
"The two full-backs of Liverpool right now are unbelievable. We can contest in any kind of way."