It is a position that appears to be on an upward trend in the modern game, with the players on the left and right flanks of the defence having more and more influence at both ends of the pitch.
Full-backs have certainly been key to the system that United have played since Rangnick’s arrival at the club back in December.
Both Aaron Wan-Bissaka and Diogo Dalot have featured from the right side of defence under the German, while Alex Telles and Luke Shaw have been tasked with a similar job from the opposite side of the backline over recent months.