The teenager made five appearances for the Cottagers’ first team and scored on his professional debut in a League Cup match at Leyton Orient 12 months ago.
He played for England at the European Under-17 Championship in 2016, when the Young Lions reached the quarter finals.
The 18-year-old Londoner joined Fulham six years ago and has converted from a striker to a central midfielder.
Adeniran has not lost his nose for goal, however. In addition to his first-team strike, the Londoner scored five times for Fulham’s Under-23s last term.
In the 2015/16 campaign Adeniran netted a hat-trick for the Cottagers’ Under-18s against Tottenham Hotspur.
Adeniran has penned a deal to the end of June 2021.