Sevilla won the Europa League this season and they were lucky enough to win this title but on the other hand, Sevilla have taken the final automatic place for the next champions league and they should get themself ready for the champions league where they are going to have harder games than what they had in Europa League. Sevilla couldn't have a good performance in most of the games in the Europa League and in La Liga but they should start hiring better players if they want to achieve something in the champions league.
The Champions League will be more difficult than the European League, which requires Sevilla to prepare as well as possible so they don't become a team that only complements the Champions League. They are a strong team in the Europa League, many even say they are the kings of the Europa League. They should be more motivated to become a team that is not only called strong in the European League, but also in the Champions League.