'I want to keep learning' - Leeds United defender pens first professional contract at Elland Road
The 17-year-old joined the club from Liverpool last summer on a two-year scholarship deal but the Whites have moved quickly to offer him a senior contract.
He will now remain at Thorp Arch until at least the summer of 2023.
Last season he featured in both the Under-18s and Under-23s for Leeds and also made one appearance in the club's EFL Trophy campaign.
He is expected to now play a larger role in Mark Jackson's development squad for the upcoming term.
"It’s a great achievement to be at such a great club with such a great history and I’m made up signing my professional contract," Chilokoa-Mullen said of his deal.
“I can’t wait to keep working hard and improving, I’m looking forward to making the step up to Under-23s football and I can’t wait for the new season.
“I’m a player who reads the game quite well and I like to defend on the front foot, I want to keep learning under the coaching staff and become a better player in general.”