RB Leipzig After initially playing in the youth department of SV Fortuna Regensburg, Diawusie moved to the academy of
Jahn Regensburg. In early 2014 he joined the under-17 team of
1. FC Nürnberg, where he would score nine goals in 22 league appearances in the following year and a half. This drew the attention of the then
2. Bundesliga club
RB Leipzig, who eventually signed him on a free during the summer of 2015. For the Saxons he played a total of 48 games in the
Under 19 Bundesliga and scored 19 goals. In 2016, he and the team won the Saxon Under-19 Cup. In addition, he was utilised three times in Leipzig's
second team. In the summer of 2017,
RB Leipzig signed Diawusie on a professional contract until 2020 and sent him on loan to
3. Liga club
SV Wehen Wiesbaden for the 2017–18 season, where he had a strong debut season in professional football with four goals and eleven assists in 35 appearances. After only making one appearance before the winter break, he returned to SV Wehen Wiesbaden on loan at the end of January 2019 until the end of the season. Diawusie made 14 appearances for them in the second half of the season, in which he scored two goals and provided five assists. SV Wehen Wiesbaden took third place and met FC Ingolstadt 04 in play-offs. In order to "protect" Diawusie, he was released from SV Wehen Wiesbaden ahead of the relegation games. In the play-offs, Wehen Wiesbaden won promotion to the 2 Bundesliga. For the 2019–20 season, Diawusie returned to FC Ingolstadt 04, who had been relegated to the 3. Liga.
Dynamo Dresden In July 2020, it was announced that Diawusie had signed a two-year contract with
Dynamo Dresden. He was part of the team winning promotion to the 2. Bundesliga in the
2020–21 season.
SV Ried After Dynamo Dresden had suffered relegation back to the 3. Liga after one season, Diawusie joined
Austrian Bundesliga club
SV Ried on a two-year contract. He initially played for the reserve team, making his debut as a starter on 30 July in a 3–1 away win in the
Austrian Regionalliga Central against
Union Vöcklamarkt. On 18 September he made his first team debut for Ried, replacing
Philipp Pomer in a 3–0 league loss to
Austria Wien. Diawusie's contract with SV Ried was terminated by mutual consent on 26 January 2023, after failing to make an impact for the club. He made only one appearance for the first team. He made his debut for the club on 3 February, replacing
Markus Ziereis in the 62nd minute of a 2–0 league loss to
SC Freiburg II. On 18 February, he scored his first and only goal for the club to complete a late comeback for Bayreuth, slotting home a cross from
Eroll Zejnullahu in the 93rd minute against
VfL Osnabrück. Bayreuth suffered relegation to the
Regionalliga at the end of the season, with Diawusie scoring once in 17 appearances for the
Die Altstädter. He signed a two-year contract with Jahn, after impressing during pre-season trials. ==International career==