The 21-year-old told Sky Sports News: "It will be a bit mad facing him as I was living next door to him in Liverpool. But I always said I wanted to play with him and against him before he retired, because if you play against him you can really judge yourself on where you are as a player.
"For me he has been the best player in this country for God knows how long, he is the complete midfield player.
"Liverpool won the League Cup when I was there but I did not make the bench, and you feel like you are not there, even though you are happy and you get a medal, you feel like you are not part of it. I want to be part of something at Swansea."
Swansea paid a £5m transfer fee for the midfielder.