Liverpool have agreed to sign Monaco midfielder Fabinho in a deal that could be worth more than £40m.
The Brazil international, 24, will join the Champions League finalists on 1 July for around £39m (45m euros).
A further £4m (5m euros) could be added in performance-related bonus payments and Fabinho’s arrival will likely be followed by the departure of Emre Can.
"This is something that I always wanted – this is a giant of a team," said Fabinho. "I am really excited."
Fabinho has spent spells playing as a right-back but has excelled in defensive midfield and is viewed as a replacement for Can, who is out of contract this summer and has repeatedly been linked with Juventus.
Manager Jurgen Klopp said: "He has ability and mentality to play at the highest level in a number of positions. He can play ‘six’, ‘eight’ and ‘two’. This is cool."
The Brazilian, whose deal will begin on 1 July, said the club’s infrastructure looked "exceptional".
"A football club of this size coming after my services, I didn’t have to think that much about coming over," added Fabinho.
"I will try to create my own history at this football club. Hopefully, on a personal level, I’m able to win titles with this club."
Fabinho, who joined Monaco on loan from Portuguese side Rio Ave in 2013, won the French league title in 2016-17.
He has featured heavily for the club since making his loan move permanent in 2015, playing 47 times in all competitions last season and scoring eight goals.
In all, he made 225 appearances and scored 29 goals in five seasons with the French club.
"We have signed a fantastic player, but someone who is an equally fantastic person I think," added Klopp.