The 25-year-old recently claimed the All-Ireland Championship with his Gaelic county side, Tyrone, last week, having played a key role in the side's run to glory since making his return.
The Irishman ventured home in September last year after 79 games and six seasons with the Bombers, stating he was homesick during his time in Australia.
McKenna returned to Ireland following a difficult 2020 campaign, with the COVID-19 pandemic placing further difficulties on the Bombers speedster.
However, McKenna's AFL career may not be over. With the All-Ireland Championship now concluded, McKenna took to Twitter to hint at a possible return to Aussie Rules.
"Any AFL clubs need a half back?" the Tweet wrote.
Any @AFL clubs need a half back?
— Conor Mckenna (@CMckenna7) September 14, 2021
In an interview late last year, McKenna flagged that a return to the AFL would always be on his mind depending on his own circumstances with Tyrone.
“I don’t think it’s totally done. There’s a thing in the AFL where you can get a mid-season draft so you can actually get drafted in June and go out from June until September. It’s only really a two- or three-month thing,” McKenna said.
“I do think the possibility may be there in three or four years with Gaelic, the way they’re talking about a split season, if Tyrone was out and the club was out of the championship and there was a possibility of going over for two or three months, it’s not something I’d close the door on.”
McKenna first joined Essendon via the 2014 Rookie Draft and made his debut the following year against Richmond.