McCartin made a successful return to footy in a Swans' VFL practice match last weekend, after stepping away from the game to deal with complications resulting from repeated concussions.
"I absolutely loved playing again. It was so fun. It was what I've been trying to get back for, for a couple of years," he said.
"It was a bit of an emotional build-up. A lot of reflecting on the last couple of years and how I got to where I am now, and a lot of the things that myself and those close to me have had to go through in that time."