Sergio Reguilon (Real Madrid)
The 23-year-old is currently on loan at Sevilla but he has been the Spanish club’s first-choice left-back helping them to third in La Liga after 18 games.
Reguilon has scored one goal and provided two assists in 16 league appearances so far this campaign, and while he may be no match for Andy Robertson, he could be a useful reserve option for the Scot.