By SABC Sport
15th July 2024
The 19-year-old centre-back made 10 appearances for the Reds after signing from French side Sochaux in 2020.
Kambwala made his senior debut during United's 2-0 defeat to West Ham at the London Stadium in the Premier League last season.
A United statement read: "Willy leaves with the sincere thanks of everyone at Manchester United, and our very best wishes for the next chapter of his career."
Kambwala said on Instagram: "Dear @manchesterunited, I arrived at the club as a boy with a dream and today I'm leaving like a young man who has fulfilled his dream.
"From the academy to the first team, it's time for me to start a new adventure after 4 wonderful seasons at the club. Thank you to all the people I have met during these 4 years.
"Coaches, my teammates, staff members, workers in Carrington and members of my host family. I'll never forget what you all did for me.
"A special thank you to you fans who have always supported me, you are the soul of this club. I wish you the best for this season and for the future."