Siena boss Sannino happy seeing Stramaccioni get his Inter Milan chance
Both men having made their Serie A coaching debuts this season.
Sannino said: "I took a longer journey, I have more stories to tell. He is a young man whom everyone says can become a great, he has a great opportunity and I'm happy for him.
"He has proven himself working with the youth team, I will happily shake his hand before the game."