The Winger is set to leave Bayern Munich for Juventus.
Douglas Costa has arrived in Turin to undergo a medical at Juventus ahead of an initial loan move.
Seria A giant Juventus have agreed to pay a loan fee of €6m and they have an option to Costa for €40m.
The Brazil international scored four goals and contributed six assists in 23 appearances for Bayern last season.
Costa will sign a five-year permanent contact with Juventus worth €6m per year once his loan expires.
Juventus have already signed Juan Cuadrado, Benatia and Bentacur this summer.