"I've been away for a while but everyone knows what this club means to me and it's a great pleasure to be back," Lee told liverpoolfc.tv this morning.
"When a club the size of Liverpool comes in for you and when a manager of the magnitude of Rafael Benitez wants you then you can't say no. When I found out they were interested in me I was really thrilled.
"After the sabbatical I've had I just wish the season was starting tomorrow, but the players have had a long, difficult and demanding season and they need to get away and get their batteries recharged.
"I've been around Melwood this morning and seen a lot of old faces but a lot of new faces as well. I've shook hands with everyone and introduced myself. There are some great people here and I can't wait to get working with them. It's so nice to be back."