James Ward-Prowse has signed a new five-year deal with Southampton.
The contract extension has ended speculation surrounding Aston Villa's interest in Ward-Prowse.
The Saints skipper says he has unfinished business at St. Mary's.
"I'm over the moon. I think I'm probably the happiest man in the world right now. To come to this decision, I think has been massive and is a big step forward," he said after the announcement was made on Thursday.
"To commit my future again to this football club is something I'm incredibly proud of and a new chapter begins now for me.
"It's probably the first time in my career that I've had that link away and that talk, but I think I was very keen to sit down and talk to the club and it's worked both ways; they've sat down and told me their admiration for me and the way they want me to lead the team – and this club has done so much for me, I can't put into the words the opportunities and chances that they've given me and I'm incredibly grateful for the club for doing that.
"I'm not finished here yet, I still have a lot left to give to this football club and I want to be there leading this team and ensuring I can give everything back and repay that faith the club have shown in me since I was eight-years-old."