Injuries lingered immediately after his arrival. Greenway missed four games with a nagging upper-body injury, but Granato's patience allowed him to work his way back at his own pace.
"I think just that situation, you almost buy the guy time," Granato said.
Greenway responded by tallying four times as a Sabre, including potting three goals over a four-game span as the Sabres clung to their playoff hopes.
"Now he's healthy and you see him growing and building relationships with his team and teammates and getting more and more comfortable," Granato said.
If the coach is a fan of Greenway's, the feeling is reciprocated from player to coach. Several Sabres have enjoyed career years in a blue and gold sweater under Granato's watch, which has Greenway excited about what they can accomplish.
"He really finds a way to help you stay on track and do the things that you need to do whether it's on the ice or off the ice, whatever the case is," Greenway said.
It's been eight years since Granato and Greenway were in the same dressing room together, but the Sabres coach retains a stockpile of information on his former players. The pair spent two years together at the USNTDP and Granato has checked in on what his former pupil has been up to
"He hasn't changed. His fiber is his fiber," Granato said. "You could see he was very mature and thoughtful in that regard, even as a young man. So that hasn't changed. It's been a tremendous help for me."
Greenway may stand tall and have a looming presence on the ice, but he's soft-spoken and thoughtful when he speaks; a characteristic that his teammates immediately recognized.
"He went in and worked and he found his way on this team," Alex Tuch said. "It was great to see honestly because he's such a great guy and he's really fit in off the ice as well.
With the backing of his coaches and teammates, there may be no better fit for Greenway than right here in Buffalo.
"He's always had the skill set. He's always had the ability," Tuch said. "And what better guy than his old NTDP coach to get that confidence back and going in Don Granato?"
Tuch would know. He's one of a handful of players who has enjoyed a breakout season under the tutelage of Granato. In his eyes, he may be the candidate to enjoy a breakthrough of his own.
"I believe we're starting to see glimpses and only glimpses because there's a long way for him to go, of potential," Granato said.