Right wing-back: Marcos Llorente (Atletico Madrid)
Interestingly, Marcos Llorente is yet to open his account for Atletico Madrid this season, having drawn a blank in all 12 appearances across competitions so far.
However, Llorente is still crucial to Atletico Madrid's offensive plays, thanks to his movement and eye for pass. He has averaged a 92.9% pass-completion rate in the UEFA Champions League this season.
Defensive Midfielder: Franck Kessie (AC Milan)
Franck Kessie has developed into a talismanic figure at AC Milan. He has scored 16 goals, and made six assists since the start of last season.
Most of his strikes have come from the penalty spot. But the Ivorian has stepped up for AC Milan in crucial moments, and has dictated play from the deep.
Defensive Midfielder: Koke (Atletico Madrid)
While Koke may not boast as many goals as Kessie, he has been the lifeblood of Atletico Madrid for several years now.
An underrated operator in Simeone's swashbuckling side, the Spaniard is excellent in ball recoveries. He also possesses an expansive passing range, and creates skilful attacking plays.
Left wing-back: Theo Hernandez (AC Milan)
After struggling to find a permanent address in Spain, Theo Hernandez has found his true home in Milan, where he has developed into a classy full-back.
Creativity is his forte, while regularly popping up with a goal or two. He tends to struggle defensively, something that's keeping him from being considered among the top players in his position.