Former AC Milan enforcer Gennaro Gattuso was famed for his crunching tackles and flashes of temper, and not much has changed since he went into management.

Judging by his touchline histrionics and press conference breakdowns, the Rossoneri boss clearly follows Fergie's school of ruthless dressing room motivation – but he's swapped the hairdryer for something a little harsher.

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The Milan manager revealed to journalists last week that he threatened to knock 19-year-old youth player Hachim Mastour’s teeth out if he didn’t stop posting football trick videos on YouTube.

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"I even threatened him because he became more famous for making videos than playing, but he doesn’t do that anymore because I told him I’d knock his teeth out, he said in the press conference.

The Moroccan wonderkid is yet to break into the AC Milan first team, and Gattuso is keen to ensure he doesn’t let his talent go to waste. Teeth, he’s less worried about.

“In recent months he’s improved some things in training and we decided to let him play in the Primavera.

“The train has passed but he’s not 50 years old, he’s 20 years old [in June] and I think he has to take stock of his mistakes.

“He needs to play consistently, because we can see he’s lost some match sharpness. I’ve noticed a few improvements though.”