Gavi, who made 26 league appearances in Barcelona's title-winning campaign last season, had previously returned from an 11-month layoff with an ACL injury to his right knee. The Spanish Football Federation had named Gavi in their squad for the World Cup qualifiers against Bulgaria and Turkey next week, but he will not be joining the national team's training camp.

Flick also addressed speculation surrounding midfielder Fermin Lopez, who has been linked with a transfer. Flick praised Fermin's skills and expressed his confidence that the 22-year-old Spain international will stay with the club. Fermin had scored eight goals and provided 10 assists last season and was a key player in Barcelona's academy.

Barcelona is aiming for their third straight win of the season when they visit Rayo Vallecano, who last beat them in LaLiga in 2023. Flick acknowledged that the match will be tough, but he is confident in his team's abilities. Barcelona will also be facing big games in the Champions League, including matches against Paris St Germain, Chelsea, and Newcastle United.