Draco had fully been expecting a punch. Perhaps, at least, some yelling. That, he thought, would have been far preferrable - whatever Astoria had done to help him become more comfortable with being touched didn't extend past her herself, and certainly didn't extend to large men whom he barely recognized and hadn't seen for five years pulling him in to hugs.
He went rigidly tense immediately, and there was only the awkward show of one hand clapping awkwardly on Greg's back to make any indication that he was capable of actual contact with another person. He relaxed as soon as Greg let him go.
"I have changed, though I admit not as much as some." Goyle himself looked rather more solid and much larger than Draco remembered, and he wondered if all Azkaban was now was exercise. "The school? Why on earth would you go there?"