Jeez. Remember this madman who headbutted Joe Jordan - who was, at that time, a member of the coaching staff at Tottenham Hotspur - when Milan took on the North London side at the Champions League.
Actually, that was just one of the many incidents where the former World Cup-winning Italian lost his cool. And now, Gennaro Gattuso is going to be on the sidelines during Serie A games as Milan have hired their former player as the manager to replace the sacked Montella.
A lot of good things were being expected from the San Siro outfit after a summer of overhauling. However, coach Vicenzo Montella couldn't find the right system to blend his players and has, as a result, had to pay for it.
Meanwhile, Milan fans seem quite upbeat with this move, but there are some who are not so sure. Presenting to you, the Twitter reactions...
We can imagine a lot of yelling
That's not really a great resume
This could be interesting
I can imagine
Totally
That makes the two of us
Interesting
Someone is happy
Well, let's hope that Gattuso can finally find his feet in management at Milan now!