Virgil van Dijk says Liverpool is the "perfect match" after his world record move from Southampton was officially completed on New Year's Day.
The 26-year-old's £75m switch from the Saints was agreed on December 27, but with the January transfer window now open, his deal - the highest fee ever paid for a defender - is now sealed.
The Dutchman told the club's website: "With the history at the club and everything around it - even the training ground and stuff - it is just a perfect, perfect match for me, and for my family as well.
"Obviously there is a lot of money being paid, but I can't do anything about that money. It's only the market.
"The only thing I can do is just work hard, do the good things and be 100 per cent every day. That's what I definitely want to do - and I am going to do."
The agreed fee for Van Dijk is a world-record sum for a defender, topping Manchester City's deal to sign Kyle Walker in July.
Van Dijk was keen on a move last summer and handed in a transfer request at St Mary's, but Liverpool ended their pursuit when the Saints complained they had made an illegal approach for the centre-back.
Working under Jurgen Klopp is a prospect that excites the club's new number four.
The former Groningen and Celtic defender added: "Since he [Klopp] has come in, I think he has made a lot of progress until now and I think it is only hopefully going to get better and better.
"Hopefully I can contribute to that as well and keep working hard. Everybody obviously from a Liverpool perspective knows how he is; how lively he is, how he can make players better and give them confidence as well.
"It just suits me as well. I think he can make me a better player and I am just looking forward to working with him."
Van Dijk is unavailable for Liverpool's New Year's Day game at Burnley as his registration will not be concluded in time.