Gattuso, known to us as Rino, is a very strong-willed person and very consistent in achieving his goals.
And what goals did he achieve?
Palermo - sacked!
Pisa - sacked!
Napoli - sacked!
Valencia - sacked!
Marseille - sacked!
Special mention that in one of his few tries, when he managed to stay for more than half a season without getting kicked out, was when he managed to cling to his seat at AC Milan, where he finished 6th and then 5th.
He hasn't achieved anything, and with how the Italian team looks right now, prepare for more disappointments!
I agree with this he started not bad but when you start to follow his path you start to realize he is only one more coach and he has nothing to give more than his character, and he is basically draining his fame as a player to get the spot.
I dont see him being a great coach at all, at least until now.