[5][6] Bagayoko was invited to play with Iberostar Tenerife on loan in the Minicopa Endesa, an under-14 club tournament, and averaged 15.2 points, eight rebounds, and 1.8 assists per game in the competition.
[1][4] Bagayoko won the 2021–22 Adidas Next Generation Tournament (ANGT) while on loan with Serbian club KK Mega Leks, averaging 17.3 points, 12.3 rebounds, 2.7 assists, 2.3 steals, and 1.7 blocks per game.
[12] On 25 April 2021, Bagayoko made his first-team debut for Fuenlabrada in a 90–76 league defeat to Real Madrid, recording two points, two rebounds, and one block in nine minutes.
Prior to the 2022–23 season, Fuenlabrada head coach Josep Maria Raventós [es] indicated that young players such as Bagayoko, Juan Fernández and Rodijs Macoha would play an increased role on the team.
[14] However, Bagayoko tore his anterior cruciate ligament (ACL) and meniscus in their next game against Bàsquet Manresa on 5 November, forcing him to miss the remainder of the 2022–23 season.