#2 Arthur, Busquets, and Rakitic must start in midfield
The trio of Arthur Melo, Sergio Busquets, and Ivan Rakitic might just do the job for Barcelona tomorrow night. Although Arturo Vidal has impressed this season by providing defensive cover and putting in well-timed tackles, he lacks proper orchestration of team play and attacking bite, therefore, it will be wise to start the aforementioned midfield trio and keep the Chilean as a backup.
Arthur Melo will provide the extra creativity and attacking threats Barcelona need in the final third as well as in the middle of the pitch. He can deliver in such big games because the lad is probably the most confident when it comes to playing with the ball, after Leo.
Ivan Rakitic offers a lot of attacking threat and is capable of causing Lyon a lot of problems if he finds himself in promising positions, just like he did against Real Madrid in the recent El Classico. Sergio Busquets remains irreplaceable and Barcelona need him to control play from deep and break down opposition attacks from the middle of the pitch.