Twitching
Mahmoud Abdul-Rauf had Tourette's Syndrome. It is a neurological disorder characterized by involuntary movements such as neck jerks and sometimes vocal tics such as grunts or even obscenities. Though Gallinari seems to have some odd facial movements, it is certainly not Tourette's Syndrome.
It looks like he is trying to grow a beard, but is having trouble. We have to realize how young he is.
His off the ball defense is not bad, but he is getting killed on the ball. He is not too quick and although he has height, he does not have size. Gregg Brittenham has his work cut out for him. Gallo needs another thirty pounds of muscle for next year.