Often a target for opposing midfielders, he has been hailed as the natural successor to former Kop favourite Philippe Coutinho.
Neco Williams' loan move, as well as Harry Wilson's move to Craven Cottage last summer, meant that there was no bad blood between the two clubs when negotiations took place.
Which brings us back to Carvalho.
Obviously, Liverpool may not be able to announce anything for Carvalho outside of the transfer window.
Man City landed River Plate's Argentina striker Julian Alvarez for £14million but loaned him back to his home-country club.
Several teams appear unwilling to meet that valuation, including both Arsenal and Manchester United as well as Tottenham.