Barcelona coach Ernesto Valverde has urged patience from fans after striking an agreement with Gremio for Arthur.

Barca and Gremio have agreed a fee rising to €40m over an option for Arthur, who is expected to sign for the Catalans in July, though join formally in January 2019.

Valverde said: "We must not go so fast. It is true that the club has been following the player for a long time and we will see if we will execute the call option.

"He's an interesting player, looking to the future, but my future, from tomorrow, I do not know how things will happen."