London-born striker Elijah joined the Hatters from Sky Bet League Two club Walsall for an undisclosed fee on 1st February 2021.
The forward had netted 10 times in the fourth tier that season, after scoring eight in his first campaign with the Saddlers following his release by Fulham in the summer of 2019.
The 6ft 4ins forward enjoyed loan spells in non-league football with Slough Town and Bognor Regis Town as a teenager, before gaining EFL experience with Cheltenham, Swindon and Stevenage while coming through the ranks at Craven Cottage.
He left Walsall with an impressive record of 18 goals in 39 League Two starts, with the Hatters securing his signature despite interest from Championship clubs both in England and Scotland.
Adebayo scored on his first start for the Hatters against Millwall and was an instant hit with his teammates and supporters alike. He followed up an impressive performance against the Lions with a goal and assist in the 3-2 win over Sheffield Wednesday.
The striker scored three more times in the 2020/21 Championship campaign, as he made the transition from League Two to second-division football look seamless.
His first full season in the second tier saw Adebayo emphasise that even further, with the striker finishing as the Hatters' leading scorer with 17 goals from 42 appearances in all competitions.
The frontman then hit seven goals in the following campaign as the Hatters were promoted to the Premier League, setting up Jordan Clark for the opening goal in the play-off final against Coventry.
After making his Premier League against Brighton on the opening day of last season, Elijah went onto score 10 times in the top-flight, including a memorable hat-trick in the 4-0 win over Brighton in January - the first Luton player to hit a Premier League treble.