Fullarton, a 200cm tall forward who made the under-15 All Australian team before switching to basketball, played twice with the Lions' NEAFL team last season. He said the transition back to football had been a smooth one.
"It was always in the back of my mind when I was playing basketball that I could go back to footy and I'm glad I did," Fullarton said.
"Each day I've been coming in with an open mind to work on everything I can to catch up.
"Last year was my draft year anyway. I feel like I'm not far behind the mark. I've still got a lot to work on, but as long as I work hard I'll be able to make up that ground."