The France defender is interesting Manchester United and Manchester City this season - and there is a risk of Barca losing him due his €60m buyout clause. For now, Umtiti has refused to consider renegotiating the clause.
On Wednesday, Valverde stated: "The fact of having clauses, it puts a price on the players. Here (in Spain), it's like that.
"At the beginning (when the player signs), we put a clause that may seem very high, and then three years pass and it is exceeded. We are happy with Umtiti and Umtiti is happy in Barcelona. I do not care what other clubs do.
"Umtiti is a great player. We want him to stay, to benefit from us and us from him. We hope he stays in Barça for many years."