Early life
Benoît Ntambue Badiashile Mukinayi Baya was born on 26 March 2001 in Limoges, Haute-Vienne and is of Congolese descent.
Club career
Monaco
On 5 February 2018, Badiashile signed his first professional contract with Monaco. He made his professional debut on 11 November, in a 4–0 Ligue 1 loss to Paris Saint-Germain.
Chelsea
On 5 January 2023, Badiashile signed with Premier League club Chelsea on a seven-and-a-half-year contract for a transfer fee reported by The Guardian to be £32.7 million (€37 million). On 15 January 2023, Badiashile made his debut for Chelsea, starting against Crystal Palace in the Premier League. The French defender played the entire game and earned his new club a clean sheet as Chelsea won 1–0.
International career
Badiashile is a senior international for France, having been a part various under-16 to under-21 teams since 2016.
Badiashile received his first call-up to the France national team for two UEFA Nations League matches against Austria and Denmark in September 2022.
Personal life
Badiashile is the younger brother of Loïc Badiashile, who is also a professional footballer.
Statistics
| Season | Competition | Appearances | Goals | Assists | Yellow Cards | Red Cards | Minutes Played |
|---|---|---|---|---|---|---|---|
| 2023/24 | Premier League | 19 | 2 | 0 | 3 | 0 | 1,520 |
| 2024/25 | Chelsea First Team | 9 | 0 | 1 | 2 | 0 | 790 |
| Total | — | 28 | 2 | 1 | 5 | 0 | 2,310 |

France