Lallana began his youth career with AFC Bournemouth before transferring to Southampton in 2000, where he developed in their academy and became a professional in 2006. After a brief loan back to Bournemouth, he broke into Southampton's first team as they earned two consecutive promotions to rise from League One to the Premier League, and became captain in 2012. After two seasons in the top flight and an international breakthrough, he joined Liverpool for a reported £25 million in July 2014. He appeared in the 2018 UEFA Champions League Final and was part of the squad that won the competition the following season, as well as lifting the 2019–20 Premier League trophy.