João Cancelo's joining of Barcelona reshaped the defensive line roles, thanks to his ability to play as both a right and left back with high efficiency, providing the technical staff with additional solutions amidst the demands of competition and the variety of scenarios within matches.

The Spanish newspaper 'Mundo Deportivo' reported that Cancelo's presence led to a redistribution of defensive roles, with Gerard Martin expected to experience an accelerated role in the center-back position during the season, while Eric has become a viable option to fill various positions in the backline. The Portuguese full-back is also considered a key element in relieving pressure on the flanks, allowing Kounde the possibility to rotate in the defensive pivot when necessary, especially when handling Ronald Araújo's condition cautiously.

The newspaper explained that Cancelo's versatility and extensive experience allow him to perform different roles according to each side's requirements. On the side where Lamine Yamal operates, the team needs an intelligent full-back who balances between offensive support and defensive protection, aligning with the young winger's creativity. On the opposite side, there is an increased need for a full-back who provides offensive width, given Raphinha's freedom to move towards the center, which requires greater penetration ability and making a difference.

The report added that Cancelo, thanks to his technical skills and control with both feet, feels comfortable even when playing with the opposite foot, as he focuses on decision-making with the ball and providing effective offensive solutions. These aspects give him an advantage in some roles compared to other options in the team. The report confirmed that the final say in how to employ him remains with coach Hans Flick, according to the needs of each match.