Barcelona has won the La Liga title. Now I don't know if Barcelona will give their full effort to win against Athletic Club in the last match. Barcelona lost 3-2 in the last match against Villarreal. Athletic Club is not a weak team. They have been undefeated for a long time. Although they are a little behind Barcelona, this team is strong.
I am sure Barcelona will play more relaxed because they will not sacrifice a number of players and most likely the coach will also rotate so that it will give the reserve players a chance to show their skills. For Athletic Club, winning against Barcelona is quite important because they will fight to maintain their position in the top four and in the last match against Barcelona, winning will be something quite important that they need to do. Athletic Club is also one of the solid teams this season in La Liga and it is certain that the match will be more fierce even though Barcelona will not rotate and include all the main players.