The highly-rated midfielder was seen as one of the best talents to come out of the Northern Territory this year, representing the Allies and the Bloods in his bid to be drafted into the AFL.
Fejo Jnr made two appearances for West Adelaide's senior side this season, averaging 13 disposals at a disposal efficiency rate of 96%.
The 19-year-old has been likened to St Kilda's Brad Hill, impressing recruiters with his aerobic capacity and agility.
After missing out on a selection at the National and Rookie Drafts, Fejo Jnr is now set to join the Bombers on a train and trial basis across the coming months, according to 7 News' Mitch Cleary.
Essendon currently have two available list spots for next season, with delisted onballer Dylan Clarke also set to continue training at Tullamarine in hope of gaining a reprieve under senior coach Ben Rutten.
Clarke was not offered a new deal for 2022, however the Bombers revealed that the 23-year-old could be re-selected via the Pre-Season Supplemental Selection Period.
.@essendonfc veteran Michael Hurley has made his return to the track for the first time in months. @cleary_mitch has been following the story. https://t.co/5zYfOfohG3 @7AFL #7AFL #7NEWS pic.twitter.com/xrA5QldkVI
— 7NEWS Melbourne (@7NewsMelbourne) November 29, 2021
Both Clarke and Fejo Jnr could fill both of Essendon's remaining list spots for next season should they prove their worth ahead of Round 1.
The Bombers were able to add a quartet of draftees to their squad last week, headlined by Pick 13 and Vic Country vice-captain Ben Hobbs.
Mature-aged recruit Garrett McDonagh and Norwood prospect Alastair Lord also joined Essendon via the National Draft, while Oakleigh Chargers product Patrick Voss joined the club through the Rookie Draft.