In 2019, at the age of fifteen, Fatawu started his career with Tamale-based club Steadfast FC, in the Zone One of the Division One League, the Ghanaian second tier.

[4] In 2021, after the Africa U-20 Cup of Nations, Fatawu was linked with several European teams, some of them being Liverpool, Bayer Leverkusen, and Sporting CP.

[13] He was involved in the team's preparations prior to the start of the season playing his first pre-season game against Belgium side Royale Union.

[16] He made his club debut in the EFL Championship three days later, coming on as a 54th-minute substitute in a 1–0 home loss to Hull City.

[22] On August 19, 2024, he made his first Premier League debut as part of the first team squad for Leicester City against Tottenham Hotspur.

In that same game, Fatawu provided his first Premier League goal assist from Jamie Vardy in a 1–1 home draw.

[32] The following year, due to his impressive form, Fatawu was promoted into the under-20 squad at the age of 16, despite being much younger than the majority of his teammates.

[33] During the competition, he played all of the Black Satellites' matches, scoring two goals in the group stages to help his side win the title for the fourth time in its history.

[42][43][44] In September 2021, Fatawu made his debut for the Black Stars in a 3–1 victory over Zimbabwe in a 2022 FIFA World Cup qualifier.