Barcelona's Lionel Messi walks past Barcelona's head coach Ronald Koeman at the end of the Spanish La Liga soccer match between FC Barcelona and Celta at the Camp Nou stadium in Barcelona, Spain, Sunday, May. 16, 2021. (AP Photo/Joan Monfort)

Barcelona's head coach Ronald Koeman walks during the Spanish La Liga soccer match between FC Barcelona and Celta at the Camp Nou stadium in Barcelona, Spain, Sunday, May. 16, 2021. (AP Photo/Joan Monfort)

Barcelona's Lionel Messi walks during the Spanish La Liga soccer match between FC Barcelona and Celta at the Camp Nou stadium in Barcelona, Spain, Sunday, May. 16, 2021. (AP Photo/Joan Monfort)

Barcelona's head coach Ronald Koeman reacts as he watches the game during the Spanish La Liga soccer match between FC Barcelona and Celta at the Camp Nou stadium in Barcelona, Spain, Sunday, May. 16, 2021. (AP Photo/Joan Monfort)

Barcelona's Lionel Messi reacts during the Spanish La Liga soccer match between FC Barcelona and Celta at the Camp Nou stadium in Barcelona, Spain, Sunday, May. 16, 2021. (AP Photo/Joan Monfort)