Interesting about Gio is the amount of coaches he had to work with.
From really top attacking coaches like Arsene and Rijkaard who were both at their primes as coach,Van Basten. to more defensive coaches as Marwijk,Advocaat,Koeman (assistant) also another coach that I have no idea about his style as Beenhakker. Even some small time with 2 top coaches of their generation as LVG & Hiddink
He has proven himself in Feynoord ,but BVB has young although talented team,they want to compete but play attractive football. If he succeeds their I can see him top candidate for being our next coach