Right-back: Achraf Hakimi (Inter Milan)
Achraf Hakimi will be coming up against his former side for the first time, and he'll want to prove a point. The Moroccan has grown in leaps and bounds since leaving the Bernabeu in 2018, starring for Dortmund during two highly successful loan spells and now taking the Serie A by storm with Inter. He's scored once and assisted twice already but will be eager to open his account in Europe against the team which undervalued his talent.
Center-back: Stefan de Vrij (Inter Milan)
The Dutchman has established himself as a regular in Inter's defense since arriving from Lazio in 2018, while Conte's tactics of playing three at the back has unlocked an extra level or two in his game.
His positional sense is excellent and passes are accurate, averaging 94% so far this season. Stefan De Vrij's secret weapon, however, is his set-piece prowess as he's scored plenty of goals from them.
Center-back: Sergio Ramos (Real Madrid)
Can any center-back really hold a candle to the Madrid skipper? He's always at the right place at the right time to deny the opposition with crucial blocks and clearances, while his expertise from the spot is pretty amazing too - Ramos has dispatched each of his last 25 penalties!
Left-back: Ferland Mendy (Real Madrid)
With Marcelo on the decline, Mendy has stepped up to take become Madrid's first-choice left-back with aplomb. The 25-year old possesses excellent close control and makes superb deliveries going forward, all the while fulfilling his defensive responsibilities without any compromises.