Lallana, who has broken into the England squad this season, says he has no plans to leave the South Coast.
"I can't express how happy I am at the club," Lallana told the Daily Mirror. "I am so settled. Settled at home with a young child and my family live down here.
"I don't think I am too comfortable either, I get challenged week in week out playing in the Premier League. It is where you want to be as a player.
"I am delighted and as happy as I have ever been here playing for Southampton with one of the best managers in the league."